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Colorful 3.64ct Opal Gemstone - GIA Certified
Colorful 3.64ct Opal Gemstone - GIA Certified

Colorful 3.64ct Opal Gemstone - GIA Certified

Located in רמת גן, IL

Certified by GIA, this opal is a stunning choice for those seeking an eye-catching gemstone!

Category

2010s Israeli Loose Gemstones

Materials

Opal

Australian Opal Ruby Diamond Platinum Pendant, GIA
Australian Opal Ruby Diamond Platinum Pendant, GIA

Australian Opal Ruby Diamond Platinum Pendant, GIA

Located in Beverly Hills, CA

A special 34.84 carat kite shape double cabochon natural opal is bordered by 2.18 crats of round rubies. Revered as a symbol of hope, fidelity and purity, opal was dubbed the Queen o...

Category

2010s Pendant Necklaces

Materials

Diamond, White Diamond, Opal, Ruby, Platinum

GIA Certified 6.67ct Australian Black Opal Diamond Ring in Platinum
GIA Certified 6.67ct Australian Black Opal Diamond Ring in Platinum

GIA Certified 6.67ct Australian Black Opal Diamond Ring in Platinum

Located in La Jolla, CA

GIA Certified Natural Australian Black Opal and Diamond Cocktail Ring in Platinum Australian Black Opal and Diamond Ring features a GIA certified, 6.67 carat center oval cabochon B...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA 7.53ct Black Opal Diamond Platinum Oval Cocktail Ring
GIA 7.53ct Black Opal Diamond Platinum Oval Cocktail Ring

GIA 7.53ct Black Opal Diamond Platinum Oval Cocktail Ring

Located in Miami, FL

This GIA Natural Black Opal and Diamond Cocktail Ring  with a total weight of 11.18 grams.

Category

2010s Art Deco Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

21st Century GIA Opal Diamond Cocktail Platinum Ring
21st Century GIA Opal Diamond Cocktail Platinum Ring

21st Century GIA Opal Diamond Cocktail Platinum Ring

Located in Miami, FL

Showcasing a prominent four-prong set cosmic GIA certified natural opal, weighing approximately, 5.40 carats.

Category

Vintage 1970s Art Deco Cocktail Rings

Materials

Diamond, Opal, Platinum

Modern GIA Black Opal Diamond Platinum Halo Cocktail Ring
Modern GIA Black Opal Diamond Platinum Halo Cocktail Ring

Modern GIA Black Opal Diamond Platinum Halo Cocktail Ring

Located in Miami, FL

Condition: Excellent This ring remains in Pristine Condition, and the opal comes with a GIA lab Report 522284709 and a Professional Appraisal Document.

Category

1990s North American Modern Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

Australian Black Opal and Diamond Ring in Platinum, GIA Certified
Australian Black Opal and Diamond Ring in Platinum, GIA Certified

Australian Black Opal and Diamond Ring in Platinum, GIA Certified

Located in La Jolla, CA

Total opal weight is 6.45 carats. The opal originates from Australia and is GIA certified.

Category

20th Century Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA Certified 2.98 Carat Natural Black Opal & Diamond Cocktail Ring
GIA Certified 2.98 Carat Natural Black Opal & Diamond Cocktail Ring

GIA Certified 2.98 Carat Natural Black Opal & Diamond Cocktail Ring

By Roman Malakov

Located in New York, NY

A GIA-certified cocktail ring showcasing a 2.98-carat oval-cut natural black opal.

Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Opal, Black Opal, Diamond, Platinum

GIA Certified Jadeite Jade Opal Yellow Gold Pendant Necklace
GIA Certified Jadeite Jade Opal Yellow Gold Pendant Necklace

GIA Certified Jadeite Jade Opal Yellow Gold Pendant Necklace

Located in Stamford, CT

Opal and jade pendant necklace. GIA certified natural, no indications of impregnation jadeite jade open circle, in a 14k yellow gold setting, accented with 3 round cabochon opals. 14...

Category

Late 20th Century Pendant Necklaces

Materials

Jade, Opal, Gold, 14k Gold, Yellow Gold

GIA Natural Black Opal 5.40 ct and Diamond Ring in Platinum
GIA Natural Black Opal 5.40 ct and Diamond Ring in Platinum

GIA Natural Black Opal 5.40 ct and Diamond Ring in Platinum

Located in La Jolla, CA

GIA Natural Black Opal and Diamond Ring in Platinum Black Opal and Diamond Ring features a GIA certified Natural Black Opal with Freeform Cabochon shape weighing 5.40 carats with Bl...

Category

20th Century North American Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

Platinum Baguette Diamond GIA Certified 11.01 Carat Australian Black Opal Ring
Platinum Baguette Diamond GIA Certified 11.01 Carat Australian Black Opal Ring

Platinum Baguette Diamond GIA Certified 11.01 Carat Australian Black Opal Ring

Located in Los Angeles, CA

DeKara Design Collection Metal- 90% Platinum, 10% Iridium. Stones- GIA Certified Oval Australian Black Opal, 115 Baguette Diamonds G-H-I Color VS1-VS2-SI1 Clarity 3.17 Carats.

Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

Peter Suchy GIA Certified 7.55 Carat Black Opal Diamond Platinum Cocktail Ring
Peter Suchy GIA Certified 7.55 Carat Black Opal Diamond Platinum Cocktail Ring

Peter Suchy GIA Certified 7.55 Carat Black Opal Diamond Platinum Cocktail Ring

By Peter Suchy

Located in Stamford, CT

Mounted in a platinum setting with a halo of round diamonds. Certified by the GIA as natural with no idications of heating. The opal displays a captivating play-of-color, with flashe...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA Certified 2.29 Carat Opal Diamond Halo Platinum Pendant Necklace
GIA Certified 2.29 Carat Opal Diamond Halo Platinum Pendant Necklace

GIA Certified 2.29 Carat Opal Diamond Halo Platinum Pendant Necklace

Located in Stamford, CT

Natural untreated 2.28 carat GIA certified dark gray opal with green and blue flash with a halo of 18 round brilliant cut diamonds. 18 inch chain and bail are platinum as well. 1 o...

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Opal, Platinum

Platinum 3.33ctw GIA Colorful Australian Black Opal Diamond Cluster Spray Ring
Platinum 3.33ctw GIA Colorful Australian Black Opal Diamond Cluster Spray Ring

Platinum 3.33ctw GIA Colorful Australian Black Opal Diamond Cluster Spray Ring

Located in Montclair, NJ

Stamp: Pt900- 1.73 - D1.60 Condition: Excellent condition! Comes with original GIA certification for the opal. Stock Number: MK-410199460 --Certification Details:-- Laboratory: GIA ...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Platinum 3.43ctw GIA Long Oval Fiery Australian Black Opal Diamond Ring
Platinum 3.43ctw GIA Long Oval Fiery Australian Black Opal Diamond Ring

Platinum 3.43ctw GIA Long Oval Fiery Australian Black Opal Diamond Ring

Located in Montclair, NJ

Excellent overall condition! Comes with original GIA certification for the opal. Stock Number: MK-34098360 --Certification Details:-- Laboratory: GIA Report Number: 1236916015 Shape...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Platinum 5.50ctw GIA Australian Oval Black Opal Open Work Diamond Ring
Platinum 5.50ctw GIA Australian Oval Black Opal Open Work Diamond Ring

Platinum 5.50ctw GIA Australian Oval Black Opal Open Work Diamond Ring

Located in Montclair, NJ

Stamp: PT950 - 5.00 - 0.502 Condition: Excellent condition! Comes with original GIA certification for the opal. Stock Number: MK-910279060 --Certification Details:-- Laboratory: GIA...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Platinum

GIA Certified Natural Opal & Yellow Sapphire Pendant with Retractable Clasp 18k*
GIA Certified Natural Opal & Yellow Sapphire Pendant with Retractable Clasp 18k*

GIA Certified Natural Opal & Yellow Sapphire Pendant with Retractable Clasp 18k*

Located in New York, NY

GIA Certified Natural Opal Pendant Report 6213047638 Please see attached report of proper details. 3.50ct Natural Yellow Sapphire Pendant: 2.05 inch long Comfortable and secure ...

Category

2010s American Pendant Necklaces

Materials

Opal, Yellow Sapphire, 18k Gold, Yellow Gold

Estate GIA 18.81 Carat Opal Diamond 14 Karat Cocktail Ring
Estate GIA 18.81 Carat Opal Diamond 14 Karat Cocktail Ring

Estate GIA 18.81 Carat Opal Diamond 14 Karat Cocktail Ring

Located in Miami, FL

This Ring comes with a GIA lab Report 6237196320 for center opal. Remains in Excellent condition and accompanied by a Professional Appraisal Document.

Category

1990s American Cocktail Rings

Materials

Diamond, Opal, 14k Gold, Platinum

Natural Opal Diamond Pendant W/ Gold Chain 3.25 TCW GIA Certified
Natural Opal Diamond Pendant W/ Gold Chain 3.25 TCW GIA Certified

Natural Opal Diamond Pendant W/ Gold Chain 3.25 TCW GIA Certified

By Enrico Kassini

Located in Brooklyn, NY

Natural Finely Faceted Quality Opal Diamond Pendant with 18" Gold Chain 3.25 TCW GIA Certified $8,950 211197 This is a Unique Custom Made Glamorous Piece of Jewelry Nothing says, “...

Category

2010s American Pendant Necklaces

Materials

Diamond, Opal, Gold, 14k Gold, White Gold

Vintage Platinum GIA 6.72ctw Black Opal w/ Diamond Halo Cocktail Ring
Vintage Platinum GIA 6.72ctw Black Opal w/ Diamond Halo Cocktail Ring

Vintage Platinum GIA 6.72ctw Black Opal w/ Diamond Halo Cocktail Ring

Located in Montclair, NJ

Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-19022202 --Certification Details:-- Laboratory: GIA Report Number: 1232609635 Shape: Oval Cutt...

Category

20th Century Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Natural Ethiopian Opal Sapphire Necklace 14k Gold 11.5 TCW GIA Certified
Natural Ethiopian Opal Sapphire Necklace 14k Gold 11.5 TCW GIA Certified

Natural Ethiopian Opal Sapphire Necklace 14k Gold 11.5 TCW GIA Certified

By Enrico Kassini

Located in Brooklyn, NY

Natural Fine Quality Ethiopian Pear Cabochon Opal and Sapphire Necklace 14k Gold 17" 11.5 TCW GIA Certified and GAL Certified $8,950 016621 This is a Unique Custom Made Glamorous P...

Category

2010s American Pendant Necklaces

Materials

Opal, Sapphire, Gold, 14k Gold, Rose Gold

Natural White Opal Diamond Ring 14k Gold 11 TCW GIA Certified
Natural White Opal Diamond Ring 14k Gold 11 TCW GIA Certified

Natural White Opal Diamond Ring 14k Gold 11 TCW GIA Certified

By Enrico Kassini

Located in Brooklyn, NY

Suite 2906     New York, N.Y. 10036 Gemological Appraisal Laboratory of America is a proud member of: - GIA Alumni Association - National Association of Jewelry Appraisers - Interna...

Category

2010s American Engagement Rings

Materials

Diamond, Opal, 14k Gold, White Gold

GIA Certified Large Carved Opal Rose Gold Frame Pendant Necklace
GIA Certified Large Carved Opal Rose Gold Frame Pendant Necklace

GIA Certified Large Carved Opal Rose Gold Frame Pendant Necklace

Located in Stamford, CT

The opal is carved from Coober Pedy Australian natural opal, mined from 1960-1970. 16 inch 14k rose gold chain. 1 pierced carved greenish white opal, approx. 90-100cts GIA Certific...

Category

Mid-20th Century Pendant Necklaces

Materials

Opal, Gold, 14k Gold, Rose Gold

GIA Natural Black Opal 6.23 carats and Diamond Cocktail Ring in Platinum
GIA Natural Black Opal 6.23 carats and Diamond Cocktail Ring in Platinum

GIA Natural Black Opal 6.23 carats and Diamond Cocktail Ring in Platinum

Located in La Jolla, CA

Total black opal weight is 6.23 carats and is GIA certified (please see copy of the certificate in the photo gallery).

Category

21st Century and Contemporary North American Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA Certified 8.45 Carat Black Opal & Diamond Halo Platinum Vintage Ring
GIA Certified 8.45 Carat Black Opal & Diamond Halo Platinum Vintage Ring

GIA Certified 8.45 Carat Black Opal & Diamond Halo Platinum Vintage Ring

Located in Miami, FL

GIA Certified Vintage 8.45 Carat Natural Black Opal & 0.70 Carat Diamond Halo in Platinum 900 Halo Set Cocktail Ring, Size 6.75.

Category

21st Century and Contemporary Retro Cocktail Rings

Materials

Diamond, Opal, Platinum

Platinum GIA Graded 2.27ctw Oval Cut Black Opal & Diamond Cocktail Ring
Platinum GIA Graded 2.27ctw Oval Cut Black Opal & Diamond Cocktail Ring

Platinum GIA Graded 2.27ctw Oval Cut Black Opal & Diamond Cocktail Ring

Located in Montclair, NJ

Excellent condition! Comes w/ GIA certification for the opal! Stock Number: MK-130127979 --Certification Details:-- Laboratory: GIA Report Number: 2235455720 Shape: Oval Cutting Sty...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Platinum GIA 4.04ctw Elongated Oval Black Opal & Diamond Ballerina Cocktail Ring
Platinum GIA 4.04ctw Elongated Oval Black Opal & Diamond Ballerina Cocktail Ring

Platinum GIA 4.04ctw Elongated Oval Black Opal & Diamond Ballerina Cocktail Ring

Located in Montclair, NJ

Ring Measurements: 17.8mm (0.70") (north to south) - 15.6mm (0.61") (east to west), 2.4mm (bottom of the shank) Ring Height: 10.9mm rise off the finger Condition: Excellent condition...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Platinum 6.62ctw GIA Large Oval Black Opal w/ Baguette & Round Diamond Ring
Platinum 6.62ctw GIA Large Oval Black Opal w/ Baguette & Round Diamond Ring

Platinum 6.62ctw GIA Large Oval Black Opal w/ Baguette & Round Diamond Ring

Located in Montclair, NJ

Excellent overall condition! Comes with original GIA certification for the opal. Stock Number: MK-170203017 --Certification Details:-- Laboratory: GIA Report Number: 5232866248 Shap...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

GIA Certified 8.69 Carat Cabochon Black Opal & Diamond in Platinum Cocktail Ring
GIA Certified 8.69 Carat Cabochon Black Opal & Diamond in Platinum Cocktail Ring

GIA Certified 8.69 Carat Cabochon Black Opal & Diamond in Platinum Cocktail Ring

Located in Miami, FL

GIA-certified 8.69 carat oval cabochon black opal with no color treatment and 1.78 carat total weight baguette diamond ballerina halo in platinum 900 cocktail ring.

Category

21st Century and Contemporary Contemporary Fashion Rings

Materials

Diamond, Black Opal, Platinum

GIA Certified 4.07 CT Opal Diamond 14K White Gold Halo Ring
GIA Certified 4.07 CT Opal Diamond 14K White Gold Halo Ring

GIA Certified 4.07 CT Opal Diamond 14K White Gold Halo Ring

Located in Westport, CT

An original 14K white gold natural opal and diamond ring, accompanied by a GIA certificate.

Category

20th Century Cocktail Rings

Materials

Diamond, Opal, White Gold, 14k Gold

Vintage Platinum Large 13.64ctw GIA Red Orange Play Opal Diamond Sides Ring
Vintage Platinum Large 13.64ctw GIA Red Orange Play Opal Diamond Sides Ring

Vintage Platinum Large 13.64ctw GIA Red Orange Play Opal Diamond Sides Ring

Located in Montclair, NJ

Comes w/ GIA certification for the opal! Stock Number: MK-390291017 --Certification Details:-- Laboratory: GIA Report Number: 6233667858 Shape: Oval Cutting Style: Double Cabochon T...

Category

20th Century Cocktail Rings

Materials

Diamond, Opal, Platinum

Platinum GIA 2.93ctw Oval Cabochon Black Opal W/ Diamond Halo & Sides Ring
Platinum GIA 2.93ctw Oval Cabochon Black Opal W/ Diamond Halo & Sides Ring

Platinum GIA 2.93ctw Oval Cabochon Black Opal W/ Diamond Halo & Sides Ring

Located in Montclair, NJ

Ring Measurements: 14.8mm (0.58") (north to south) , 14.6mm (0.57")(east to west, side to side, diamond to diamond), 3mm (bottom of the shank) Ring Height: 9.6mm rise off the finger ...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Platinum

GIA Certified 5.75 Carats Natural Black Opal & Yellow Diamond Fashion Ring
GIA Certified 5.75 Carats Natural Black Opal & Yellow Diamond Fashion Ring

GIA Certified 5.75 Carats Natural Black Opal & Yellow Diamond Fashion Ring

Located in New York, NY

A one-of-a-kind fashion ring, showcasing a GIA certified 5.75 carats black natural opal with a freeform shape and no indications of heat treatment, set on an extremely rare prong set...

Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Yellow Diamond, Opal, Black Opal, 18k Gold, Yellow Gold, Platinum

Vintage Platinum GIA 3.83ctw Super Fiery Gray Opal w/ Diamond Ballerina Ring
Vintage Platinum GIA 3.83ctw Super Fiery Gray Opal w/ Diamond Ballerina Ring

Vintage Platinum GIA 3.83ctw Super Fiery Gray Opal w/ Diamond Ballerina Ring

Located in Montclair, NJ

Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-390127916 --Certification Details:-- Laboratory: GIA Report Number: 5232558527 Shape: Oval Cut...

Category

20th Century Cocktail Rings

Materials

Diamond, Opal, Platinum

GIA Certified 27.28 Carat Opal & Diamond Convertible Brooch Pendant in 18K Gold
GIA Certified 27.28 Carat Opal & Diamond Convertible Brooch Pendant in 18K Gold

GIA Certified 27.28 Carat Opal & Diamond Convertible Brooch Pendant in 18K Gold

Located in Plantation, FL

An exceptional high-jewelry convertible brooch and pendant centered by a GIA-certified natural opal of impressive size and vivid character.

Category

Late 20th Century Modern Pendant Necklaces

Materials

Diamond, Opal, 18k Gold

Large Solid Gold GIA Pear Australian Black Opal Emerald & Diamond Statement Ring
Large Solid Gold GIA Pear Australian Black Opal Emerald & Diamond Statement Ring

Large Solid Gold GIA Pear Australian Black Opal Emerald & Diamond Statement Ring

Located in Montclair, NJ

Excellent overall condition! Comes with original GIA certification for the opal. Stock Number: MK-640726136 --Certification Details:-- Laboratory: GIA Report Number: 2245073632 Shap...

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Emerald, Black Opal, Gold, White Gold, Yellow Gold

Vintage 14k Yellow Gold GIA Opal Rondelle Beads Graduated 22" Strand Necklace
Vintage 14k Yellow Gold GIA Opal Rondelle Beads Graduated 22" Strand Necklace

Vintage 14k Yellow Gold GIA Opal Rondelle Beads Graduated 22" Strand Necklace

Located in Montclair, NJ

Excellent overall condition. Comes w/ GIA certification for 1 randomly picked opal. Stock Number: MK-49010394 --Certification Details:-- Laboratory: GIA GIA Report Number: 223538781...

Category

20th Century Beaded Necklaces

Materials

Opal, Gold, 14k Gold, Yellow Gold

Platinum GIA 2.72ctw Mosaic Black Opal w/ Diamond Sided Cocktail Statement Ring
Platinum GIA 2.72ctw Mosaic Black Opal w/ Diamond Sided Cocktail Statement Ring

Platinum GIA 2.72ctw Mosaic Black Opal w/ Diamond Sided Cocktail Statement Ring

Located in Montclair, NJ

Ring Measurements: 10.9mm (0.43") (north to south) , 3.4mm (bottom of the shank) Ring Height: 6.5mm rise off the finger Condition: Excellent condition! Comes w/ GIA certification for...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

GIA Antique Australian Opal 14K Pendant Natural Vintage Necklace Solid Gold Fine
GIA Antique Australian Opal 14K Pendant Natural Vintage Necklace Solid Gold Fine

GIA Antique Australian Opal 14K Pendant Natural Vintage Necklace Solid Gold Fine

Located in Sylvania, GA

Old South Jewels proudly presents GIA CERTIFIED ANTIQUE AUSTRALIAN OPAL VINTAGE 14K SOLID GOLD PENDANT!

Category

Antique 19th Century Pendant Necklaces

Materials

Opal, Gold, 14k Gold

Solid Platinum 2.69ctw GIA Black Opal w/ Twisted Shoulder Diamond Halo Ring
Solid Platinum 2.69ctw GIA Black Opal w/ Twisted Shoulder Diamond Halo Ring

Solid Platinum 2.69ctw GIA Black Opal w/ Twisted Shoulder Diamond Halo Ring

Located in Montclair, NJ

Ring Measurements: 15mm (0.59") (north to south) , 2.2mm (bottom of the shank) Ring Height: 8.1mm rise off the finger Condition: Excellent condition! Comes w/ GIA certification for t...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Vintage Solid Platinum GIA 1.30ctw Cabochon Black Opal w/ Diamond Cocktail Ring
Vintage Solid Platinum GIA 1.30ctw Cabochon Black Opal w/ Diamond Cocktail Ring

Vintage Solid Platinum GIA 1.30ctw Cabochon Black Opal w/ Diamond Cocktail Ring

Located in Montclair, NJ

Excellent condition! Comes w/ GIA certification for the opal! Stock Number: MK-37060599 --Certification Details:-- Laboratory: GIA Report Number: 5231472422 Shape: Oval Cutting Styl...

Category

20th Century Cocktail Rings

Materials

Diamond, Black Opal, Platinum

GIA Black Opal and Diamond Pendant Necklace in Platinum and 18k White Gold
GIA Black Opal and Diamond Pendant Necklace in Platinum and 18k White Gold

GIA Black Opal and Diamond Pendant Necklace in Platinum and 18k White Gold

Located in La Jolla, CA

Please see a copy of the GIA certificate in the photo gallery. Total black opal weight is 18.96 carats.

Category

21st Century and Contemporary North American Pendant Necklaces

Materials

Diamond, Opal, Black Opal, 18k Gold, White Gold, Platinum

Irene Neuwirth Rose Gold GIA Pink Opal w/ Diamond Halo Carved Flower Earrings
Irene Neuwirth Rose Gold GIA Pink Opal w/ Diamond Halo Carved Flower Earrings

Irene Neuwirth Rose Gold GIA Pink Opal w/ Diamond Halo Carved Flower Earrings

By Irene Neuwirth

Located in Montclair, NJ

Excellent overall condition! Comes with Original GIA certification for 1 oval opal and 1 carved opal.

Category

21st Century and Contemporary Clip-on Earrings

Materials

Diamond, Opal, Gold, Rose Gold

Antique Edwardian Gold & Platinum GIA Black Opal Diamond Halo Low Profile Ring
Antique Edwardian Gold & Platinum GIA Black Opal Diamond Halo Low Profile Ring

Antique Edwardian Gold & Platinum GIA Black Opal Diamond Halo Low Profile Ring

Located in Montclair, NJ

Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-190682156 --Certification Details:-- Laboratory: GIA Report Number: 2233487390 Shape: Oval Cut...

Category

Antique 19th Century Edwardian Engagement Rings

Materials

Diamond, Opal, Gold, Yellow Gold, Platinum

Vintage Platinum 1.43ctw GIA Oval Boulder Opal w/ Step Cut Diamond Sides Ring
Vintage Platinum 1.43ctw GIA Oval Boulder Opal w/ Step Cut Diamond Sides Ring

Vintage Platinum 1.43ctw GIA Oval Boulder Opal w/ Step Cut Diamond Sides Ring

Located in Montclair, NJ

Excellent condition! Comes with original GIA certification for the opal. Stock Number: MK-19067013 --Certification Details:-- Laboratory: GIA Report Number: 2235577497 Shape: Oval C...

Category

20th Century Cocktail Rings

Materials

Diamond, Opal, Platinum

Platinum 2.77ctw GIA Bright & Lively Oval Black Opal w/ Step Cut Diamond Ring
Platinum 2.77ctw GIA Bright & Lively Oval Black Opal w/ Step Cut Diamond Ring

Platinum 2.77ctw GIA Bright & Lively Oval Black Opal w/ Step Cut Diamond Ring

Located in Montclair, NJ

Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-160169019 --Certification Details:-- Laboratory: GIA Report Number: 2235866402 Shape: Oval Cut...

Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, Black Opal, Platinum

Antique 10k Yellow Gold GIA 3.40ct Australian Black Opal Bezel Solitaire Ring
Antique 10k Yellow Gold GIA 3.40ct Australian Black Opal Bezel Solitaire Ring

Antique 10k Yellow Gold GIA 3.40ct Australian Black Opal Bezel Solitaire Ring

Located in Montclair, NJ

Original finish & patina preserved. Opal no crazing. Excellent condition. Comes w/ GIA certification for the opal!

Category

Antique 19th Century Solitaire Rings

Materials

Opal, Gold, 10k Gold, Yellow Gold

Vintage Platinum GIA 1.26ctw Gray Opal w/ Diamond Sides Low Profile Band Ring
Vintage Platinum GIA 1.26ctw Gray Opal w/ Diamond Sides Low Profile Band Ring

Vintage Platinum GIA 1.26ctw Gray Opal w/ Diamond Sides Low Profile Band Ring

Located in Montclair, NJ

Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-140148010 --Certification Details:-- Laboratory: GIA Report Number: 2231686432 Shape: Oval Cut...

Category

20th Century Three-Stone Rings

Materials

Diamond, Opal, Platinum

Vintage Platinum GIA 1.66ctw Black Opal w/ Red Blue Color Play & Diamond Ring
Vintage Platinum GIA 1.66ctw Black Opal w/ Red Blue Color Play & Diamond Ring

Vintage Platinum GIA 1.66ctw Black Opal w/ Red Blue Color Play & Diamond Ring

Located in Montclair, NJ

Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-14096033 --Certification Details:-- Laboratory: GIA Report Number: 2231634170 Shape: Oval Cutt...

Category

20th Century Cocktail Rings

Materials

Diamond, Opal, Platinum

Vintage 14k Gold 10.28ct GIA Marquise Cabochon Opal & Diamond Halo Cocktail Ring
Vintage 14k Gold 10.28ct GIA Marquise Cabochon Opal & Diamond Halo Cocktail Ring

Vintage 14k Gold 10.28ct GIA Marquise Cabochon Opal & Diamond Halo Cocktail Ring

Located in Montclair, NJ

Excellent condition. Comes w/ GIA certification for the opal! Stock Number: EK-64098830-23110116-EY --Certification Details:-- Laboratory: GIA Report Number: 5234091561 Shape: Marqu...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, 14k Gold, White Gold

Platinum 3.65ctw GIA Elongated Oval Black Opal w/ Diamond Halo Nice Shape Ring
Platinum 3.65ctw GIA Elongated Oval Black Opal w/ Diamond Halo Nice Shape Ring

Platinum 3.65ctw GIA Elongated Oval Black Opal w/ Diamond Halo Nice Shape Ring

Located in Montclair, NJ

Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-10227136 --Certification Details:-- Laboratory: GIA Report Number: 6237602860 Shape: Oval Cutt...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Vintage GIA Certified Black Opal Mixed Cut Diamond Halo 14K Cocktail Ring
Vintage GIA Certified Black Opal Mixed Cut Diamond Halo 14K Cocktail Ring

Vintage GIA Certified Black Opal Mixed Cut Diamond Halo 14K Cocktail Ring

Located in Miami, FL

GIA Certified 5 Carat + Black Opal with vibrant play-of-color takes center stage in this vintage 14K white gold ring, adorned with a dazzling halo of mixed cut diamonds.

Category

1990s Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Gold, 14k Gold, White Gold

Natural Black Opal Stone 1.06 cts in Platinum Ring with Diamonds with GIA Report
Natural Black Opal Stone 1.06 cts in Platinum Ring with Diamonds with GIA Report

Natural Black Opal Stone 1.06 cts in Platinum Ring with Diamonds with GIA Report

Located in Los Angeles, CA

The diamonds enhance the opal's beauty, creating a luxurious contrast. This unique piece is accompanied by a GIA report certifying the authenticity of the gemstones.

Category

21st Century and Contemporary Unknown Cocktail Rings

Materials

Black Opal, Opal, Diamond, Platinum

French Antique Art Nouveau Gold GIA Black Opal & Diamond Repousse Navette Ring
French Antique Art Nouveau Gold GIA Black Opal & Diamond Repousse Navette Ring

French Antique Art Nouveau Gold GIA Black Opal & Diamond Repousse Navette Ring

Located in Montclair, NJ

Excellent condition! Comes w/ GIA certification for the opal! Stock Number: MK-680690238 --Certification Details:-- Laboratory: GIA Report Number: 6237487399 Shape: Oval Cutting Sty...

Category

Antique 19th Century Art Nouveau Cocktail Rings

Materials

Diamond, Opal, Gold, White Gold, Yellow Gold

Peter Suchy GIA Certified 13.74 Carat Opal Diamond Ruby Yellow Gold Pendant
Peter Suchy GIA Certified 13.74 Carat Opal Diamond Ruby Yellow Gold Pendant

Peter Suchy GIA Certified 13.74 Carat Opal Diamond Ruby Yellow Gold Pendant

By Peter Suchy

Located in Stamford, CT

Opal, diamond and ruby pendant necklace. GIA certified 13.74cts square opal with a halo of 19 round diamonds and 19 round rubies set in 18k yellow gold. 18 inch chain.

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Opal, Ruby, Gold, 18k Gold, Yellow Gold

GIA Certified 8 Carat White Opal With Orange Garnet & Aquamarine Halo Ring
GIA Certified 8 Carat White Opal With Orange Garnet & Aquamarine Halo Ring

GIA Certified 8 Carat White Opal With Orange Garnet & Aquamarine Halo Ring

By Gad & Co.

Located in Miami, FL

The center features a bezel set 8 carat cabochon-cut white translucent opal with GIA certification. The opal is paired with a halo of 10 round-cut aquamarine stones and 2 oval-cut or...

Category

21st Century and Contemporary North American Art Deco Cocktail Rings

Materials

Aquamarine, Garnet, Opal, Gold, 18k Gold, Yellow Gold

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Recent Sales

15.54 Carat Oval Opal GIA Certified
15.54 Carat Oval Opal GIA Certified

15.54 Carat Oval Opal GIA Certified

Unavailable

W 0.96 in D 0.45 in L 0.52 in

15.54 Carat Oval Opal GIA Certified

Located in Toronto, Ontario

This is a stunning GIA Certified Opal The GIA report reads as follows: GIA Report Number: 2203893790 Shape: Oval Cutting Style: Double Cabochon Cutting Style: Crown: Cutting Style:...

Category

2010s Ethiopian Loose Gemstones

Materials

Opal

1.42ct Oval Cabochon Black Opal GIA Certified
1.42ct Oval Cabochon Black Opal GIA Certified

1.42ct Oval Cabochon Black Opal GIA Certified

Unavailable

W 0.38 in D 0.12 in L 0.29 in

1.42ct Oval Cabochon Black Opal GIA Certified

Located in Toronto, Ontario

This is a stunning GIA Certified Opal The GIA report reads as follows: GIA Report Number: 6227841105 Shape: Oval Cutting Style: Cabochon Cutting Style: Crown: Cutting Style: Pavil...

Category

2010s Australian Loose Gemstones

Materials

Opal, Black Opal

8.01ct Freeform Gray Opal GIA Certified Australia
8.01ct Freeform Gray Opal GIA Certified Australia

8.01ct Freeform Gray Opal GIA Certified Australia

Unavailable

W 0.64 in D 0.21 in L 0.59 in

8.01ct Freeform Gray Opal GIA Certified Australia

Located in Toronto, Ontario

This is a stunning GIA Certified Opal The GIA report reads as follows: GIA Report Number: 2239220404 Shape: NONE Cutting Style: Cutting Style: Crown: Cutting Style: Pavilion: ...

Category

2010s Australian Loose Gemstones

Materials

Opal

6.39ct Freeform Gray Opal GIA Certified Australia
6.39ct Freeform Gray Opal GIA Certified Australia

6.39ct Freeform Gray Opal GIA Certified Australia

Unavailable

W 0.71 in D 0.22 in L 0.48 in

6.39ct Freeform Gray Opal GIA Certified Australia

Located in Toronto, Ontario

This is a stunning GIA Certified Opal The GIA report reads as follows: GIA Report Number: 5234220342 Shape: NONE Cutting Style: Cutting Style: Crown: Cutting Style: Pavilion: ...

Category

2010s Australian Loose Gemstones

Materials

Opal

5.54ct Freeform Tablet Semi Black Opal GIA Certified Australia
5.54ct Freeform Tablet Semi Black Opal GIA Certified Australia

5.54ct Freeform Tablet Semi Black Opal GIA Certified Australia

Located in Toronto, Ontario

This is a stunning GIA Certified Opal The GIA report reads as follows: GIA Report Number: 2211817189 Shape: Freeform Tablet Cutting Style: Cutting Style: Crown: Cutting Style: P...

Category

2010s Loose Gemstones

Materials

Opal, Black Opal

GIA Certified 3.96 Carat Oval Shape Natural Opal
GIA Certified 3.96 Carat Oval Shape Natural Opal

GIA Certified 3.96 Carat Oval Shape Natural Opal

Located in LA, CA

GIA Certified 3.96 carats Oval Shape Natural Opal 16.16 x 11.08 x 3.95 mm GIA #2225851161 3.96 carats is a sizeable amount for an opal, and if it exhibits exceptional color, clarity...

Category

2010s Loose Gemstones

Materials

Opal

GIA Certified 2.96 Carat Oval Shape Natural Opal
GIA Certified 2.96 Carat Oval Shape Natural Opal

GIA Certified 2.96 Carat Oval Shape Natural Opal

Located in LA, CA

GIA Certified 2.96 carats Oval Shape Natural Opal 14.79 x 12.33 x 2.41 mm GIA # 2225851168 $ 1,000.00 Beautiful Natural White Color The 2.96ct oval-shaped opal has both psycholo...

Category

21st Century and Contemporary Loose Gemstones

Materials

Opal

GIA Certified Freeform 2.68 Carat Australian Black Fire Opal
GIA Certified Freeform 2.68 Carat Australian Black Fire Opal

GIA Certified Freeform 2.68 Carat Australian Black Fire Opal

Located in LA, CA

GIA 2.68ct Freeform Natural Australian Black Fire Opal Cabochon 15.31x11.70x2.45mm GIA #2201525624 Black opals are carriers of strong karma, representing justice and providing their ...

Category

2010s Loose Gemstones

Materials

Fire Opal

GIA Certified 2.20 Carat Triangular Natural Black Fire Cabochon Opal
GIA Certified 2.20 Carat Triangular Natural Black Fire Cabochon Opal

GIA Certified 2.20 Carat Triangular Natural Black Fire Cabochon Opal

Located in LA, CA

2.20ct Triangular Natural Australian Black Fire Opal Cabochon 12.08 x 11.90 x 2.72 mm GIA#1206525636 The most distinctive, varied, and lovely birthstone is undoubtedly the opal.

Category

2010s Loose Gemstones

Materials

Opal

GIA Certified 3.34 Carat Oval Shape Natural Australian Black Fire Opal
GIA Certified 3.34 Carat Oval Shape Natural Australian Black Fire Opal

GIA Certified 3.34 Carat Oval Shape Natural Australian Black Fire Opal

Located in LA, CA

GIA 3.34ct Oval Shape Natural Australian Black Fire OPAL 13.06X9.48X4.18mm GIA #2215413920 Possibly the most distinctive, varied, and lovely birthstone is the opal.

Category

2010s Loose Gemstones

Materials

Fire Opal

GIA Certified 7.17 Carat Natural Australian Black Fire Opal Platinum Ring
GIA Certified 7.17 Carat Natural Australian Black Fire Opal Platinum Ring

GIA Certified 7.17 Carat Natural Australian Black Fire Opal Platinum Ring

Located in LA, CA

Platinum : 11.80gm Natural Australian Black Fire opal : 7.17ct Natural Diamonds : 0.70ct GIA # 2215138442 Delicately mounted in GIA Certified Platinum with 11.80gm weight, this rare...

Category

2010s American Cocktail Rings

Materials

White Diamond, Black Opal, Fire Opal, Platinum

19.15 Carat GIA Midnight Black Opal 18 Karat Gold Ring
19.15 Carat GIA Midnight Black Opal 18 Karat Gold Ring

19.15 Carat GIA Midnight Black Opal 18 Karat Gold Ring

Located in METAIRIE, LA

This Opulent Opal Solitaire ring features a 19.15 carat GIA Certified Black Opal possessing every characteristic of an Opal collector's prized Opal!

Category

Vintage 1970s More Bracelets

Materials

Opal, Yellow Gold, 18k Gold

Tanzanite and Opal, Diamond Earrings 14 Karat, circa 1985 Dangle
Tanzanite and Opal, Diamond Earrings 14 Karat, circa 1985 Dangle

Tanzanite and Opal, Diamond Earrings 14 Karat, circa 1985 Dangle

Located in Aliso Viejo, CA

The earrings are accented with opal inlay cut stones. GIA Gemologist inspected & evaluated

Category

Late 20th Century Unknown Retro Dangle Earrings

Materials

Tanzanite, 14k Gold

GIA Certified Natural Fire Opal & Diamond Halo Dome Cocktail Statement Ring
GIA Certified Natural Fire Opal & Diamond Halo Dome Cocktail Statement Ring

GIA Certified Natural Fire Opal & Diamond Halo Dome Cocktail Statement Ring

Located in Baltimore, MD

GIA Certified Natural Opal & Diamond Halo Dome Cocktail Statement Ring Metal: 14k white gold Weight: 13.16 grams Diamonds: Approx. 1.00 CTW F-G VS round natural diamonds Opal: GIA c...

Category

21st Century and Contemporary North American Modern Dome Rings

Materials

Diamond, Opal, White Gold

GIA Certified 11.11 Carat Australian Black Opal Ruby and Diamond Ring
GIA Certified 11.11 Carat Australian Black Opal Ruby and Diamond Ring

GIA Certified 11.11 Carat Australian Black Opal Ruby and Diamond Ring

By Nazarelle

Located in Houston, TX

This ring is made with 14 karat white gold and features an 11.11ct GIA certified Australian Black Opal (GIA Certificate number: 5202388982) with a mixture of colors like red, orang...

Category

2010s American Modern Cocktail Rings

Materials

Opal, Diamond, Ruby, 14k Gold, Gold, White Gold, Rhodium

14 Karat Gold Oval Black Opal and Diamond Halo Ring
14 Karat Gold Oval Black Opal and Diamond Halo Ring

14 Karat Gold Oval Black Opal and Diamond Halo Ring

Located in Coral Gables, FL

14 Karat White & Yellow Gold Cocktail Ring Featuring A Magnificent 20 Carat Oval Black Opal (GIA Report #2211084882) Surrounded By 20 Round Brilliant Cut Diamonds Of VS Clarity & H C...

Category

Vintage 1980s Cocktail Rings

Materials

Diamond, Opal, Gold, 14k Gold

Investment GIA 4.75ct Black Opal Diamond Halo Ring - .900 Platinum - Rare
Investment GIA 4.75ct Black Opal Diamond Halo Ring - .900 Platinum - Rare

Investment GIA 4.75ct Black Opal Diamond Halo Ring - .900 Platinum - Rare

Located in Media, PA

A masterwork of fine jewelry, this exquisite ring features a GIA Certified 4.75ct Natural Black Opal. Renowned for its deep, dark body tone, this opal exhibits a vibrant, multidimens...

Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Opal, Black Opal, Platinum

18 Karat White Gold Black Opal, Paraiba Tourmaline, and Diamond Ring
18 Karat White Gold Black Opal, Paraiba Tourmaline, and Diamond Ring

18 Karat White Gold Black Opal, Paraiba Tourmaline, and Diamond Ring

By Nazarelle

Located in Houston, TX

This ring is made with 18 karat white gold and features a 4.95ct long natural black opal (GIA certified: 6177239503) with a mixture of colors like blue, green, purple, and orange.

Category

2010s American Modern Cocktail Rings

Materials

Opal, Diamond, Tourmaline, Gold, 18k Gold, White Gold

GIA Certified Natural Opal & Diamond 14k Ring – 23x15mm Light Gray Cabochon
GIA Certified Natural Opal & Diamond 14k Ring – 23x15mm Light Gray Cabochon

GIA Certified Natural Opal & Diamond 14k Ring – 23x15mm Light Gray Cabochon

Located in Media, PA

GIA Certified Natural Opal Ring – 23x15mm Light Gray Cabochon, Vibrant Play-of-Color, Size 8.25, 11.71g Make a statement with this bold and beautiful GIA-certified natural opal 14k ...

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Opal, 14k Gold

GIA Certified 2.40ct Natural Black Opal & Diamond Ring 14K Yellow Gold
GIA Certified 2.40ct Natural Black Opal & Diamond Ring 14K Yellow Gold

GIA Certified 2.40ct Natural Black Opal & Diamond Ring 14K Yellow Gold

Located in Media, PA

This is a magnificent GIA-certified natural black opal and diamond ring, masterfully crafted in solid 14K yellow gold, showcasing a mesmerizing and natural play of color.

Category

1990s Fashion Rings

Materials

Opal, Diamond, Black Opal, 14k Gold, Yellow Gold

Mesmerizing 3.64ct Opal Gemstone - GIA Certified
Mesmerizing 3.64ct Opal Gemstone - GIA Certified

Mesmerizing 3.64ct Opal Gemstone - GIA Certified

Located in רמת גן, IL

Certified by GIA, this opal is a stunning choice for those seeking an eye-catching gemstone!

Category

2010s Israeli Loose Gemstones

Materials

Opal

GIA Natural Opal Diamond Platinum Ring
GIA Natural Opal Diamond Platinum Ring

GIA Natural Opal Diamond Platinum Ring

Located in Beverly Hills, CA

A tremendous amount of color is exhibited through this GIA certified Australian opal. Placed in an exquisite hand made art deco platinum ring that has been designed with clean, white...

Category

Vintage 1930s Unknown Art Deco More Rings

Materials

Diamond, Opal, Platinum

GIA Certified Opal & Diamond Cocktail Ring
GIA Certified Opal & Diamond Cocktail Ring

GIA Certified Opal & Diamond Cocktail Ring

Located in Webster, NY

Stunning custom made GIA certified Opal & Diamond ring. Gemstone: Opal & Diamond Opal Size: 16.5 x 15 x 10.85mm Diamond Carat Weight: .70CTW Diamond Cut: Round Brilliant Cut Color...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, 14k Gold

GIA Certified 23.08 Carat Opal Ring
GIA Certified 23.08 Carat Opal Ring

GIA Certified 23.08 Carat Opal Ring

Located in Boca Raton, FL

Material: 14k White Gold Gemstone Details: GIA Certified Opal gemstone 23.08ct (GIA# 2195617924) Diamond Details: Approximately 4.41ctw baguette and round brilliant diamonds.

Category

21st Century and Contemporary Dome Rings

Materials

Diamond, White Diamond, Opal, 14k Gold, White Gold

Natural GIA Cert Opal Diamond Platinum Ring
Natural GIA Cert Opal Diamond Platinum Ring

Natural GIA Cert Opal Diamond Platinum Ring

Located in Beverly Hills, CA

A tremendous amount of color is exhibited through this GIA certified Australian opal. Placed in an exquisite hand made art deco platinum ring that has been designed with clean, white...

Category

Vintage 1930s American Art Deco More Rings

Materials

Diamond, Opal, Platinum

Modern GIA Certified Black Opal Diamond Platinum Cocktail Ring
Modern GIA Certified Black Opal Diamond Platinum Cocktail Ring

Modern GIA Certified Black Opal Diamond Platinum Cocktail Ring

Located in Miami, FL

This purchase is accompanied by a GIA Certificate #2213450218 & appraisal document.

Category

1990s Japanese Art Deco Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA 6.55 carat Black Opal and Aquamarine Ring in Platinum
GIA 6.55 carat Black Opal and Aquamarine Ring in Platinum

GIA 6.55 carat Black Opal and Aquamarine Ring in Platinum

Located in La Jolla, CA

GIA Certified 6.55 carat Black Opal and Aquamarine Ring in Platinum Black Opal and Diamond Ring features a GIA certified Black Opal weighing 6.55 carats with Blue, Green, Yellow, a...

Category

21st Century and Contemporary North American Cocktail Rings

Materials

Black Opal, Opal, Aquamarine, Platinum

GIA 2.79ct Natural Black Opal Diamond Platinum Ballerina Cocktail Ring
GIA 2.79ct Natural Black Opal Diamond Platinum Ballerina Cocktail Ring

GIA 2.79ct Natural Black Opal Diamond Platinum Ballerina Cocktail Ring

Located in Miami, FL

The Multicolor natural display on this GIA certified Opal & Diamond ring, is beautifully complemented by the ballerina design, Crafted in solid Platinum, the center is adorned by a ...

Category

1990s Retro Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

1980s GIA Large Black Opal Diamond Platinum Cocktail Ballerina Ring
1980s GIA Large Black Opal Diamond Platinum Cocktail Ballerina Ring

1980s GIA Large Black Opal Diamond Platinum Cocktail Ballerina Ring

Located in Miami, FL

This cosmic looking Black Opal and diamond Ballerina Ring is crafted in Solid Platinum, Weighing 24.4 grams and measuring 25 mm x 31 mm, 14 mm high, showcasing a prominent Oval Doub...

Category

1990s Modern Cocktail Rings

Materials

Diamond, Black Opal, Opal, Platinum

GIA Certified Natural Black Boulder Opal Necklace 18 Karat
GIA Certified Natural Black Boulder Opal Necklace 18 Karat

GIA Certified Natural Black Boulder Opal Necklace 18 Karat

Located in New York, NY

Boulder Blues GIA Certified 21.02 x 19.09mm Natural Non treated Black Opal.

Category

2010s American Pendant Necklaces

Materials

Opal, 14k Gold, Yellow Gold

GIA Certified 3.59ct Black Opal & Diamond Platinum 3-Stone Ring
GIA Certified 3.59ct Black Opal & Diamond Platinum 3-Stone Ring

GIA Certified 3.59ct Black Opal & Diamond Platinum 3-Stone Ring

Located in La Jolla, CA

GIA Certified 3.59 carat Black Opal and Diamond 3-stone Ring in Platinum Black Opal and Diamond Ring features an oval-shaped GIA certified Black Opal with Blue and Green play of co...

Category

21st Century and Contemporary North American Three-Stone Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA Certified Natural Grey Opal Diamond Ring in Platinum
GIA Certified Natural Grey Opal Diamond Ring in Platinum

GIA Certified Natural Grey Opal Diamond Ring in Platinum

Located in Houston, TX

Platinum ring featuring a natural grey opal accented by diamonds. The opal total 3.15 carats, accompanied by a GIA report.

Category

21st Century and Contemporary Unknown Cocktail Rings

Materials

Diamond, Opal, Platinum

Victorian Black Opal Cabochon 18 Karat Gold Oval Stickpin GIA
Victorian Black Opal Cabochon 18 Karat Gold Oval Stickpin GIA

Victorian Black Opal Cabochon 18 Karat Gold Oval Stickpin GIA

Located in Philadelphia, PA

Featuring an oval black opal double cabochon measuring approximately 10.9 x 9.5 mm Opaque dark gray body color with very strong spectral play-of-color Bezel set in a polished gold ...

Category

Antique Early 1900s Victorian Brooches

Materials

Opal, Black Opal, Gold, 18k Gold, Yellow Gold

GIA 12.80 Carats Opal Diamond Platinum Halo Cocktail Ring
GIA 12.80 Carats Opal Diamond Platinum Halo Cocktail Ring

GIA 12.80 Carats Opal Diamond Platinum Halo Cocktail Ring

Located in Miami, FL

A stunning natural large white opal with diamonds in a Halo design compose this exquisite cocktail ring, Crafted in solid Platinum, the center is adorned by a GIA certified Double C...

Category

Vintage 1980s American Retro Cocktail Rings

Materials

Diamond, Opal, Platinum

GIA Certified 22.85ct natural cabochon opal ring 18Kt Gold
GIA Certified 22.85ct natural cabochon opal ring 18Kt Gold

GIA Certified 22.85ct natural cabochon opal ring 18Kt Gold

Located in New York, NY

Play of color. GIA Certified 22.85ct. Natural Non treated Opal ring.

Category

2010s American Solitaire Rings

Materials

Opal, 18k Gold, Yellow Gold, Gold

GIA 5.39 carats Black Opal & Diamond Ballerina Cocktail Ring in Platinum
GIA 5.39 carats Black Opal & Diamond Ballerina Cocktail Ring in Platinum

GIA 5.39 carats Black Opal & Diamond Ballerina Cocktail Ring in Platinum

Located in La Jolla, CA

The black opal weighs 5.39 carats and is GIA certified (please see copy of certificate in the photo gallery).

Category

21st Century and Contemporary North American Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA Certified 10.91 Carat Natural Opal Diamonds Pendant 18 Karat
GIA Certified 10.91 Carat Natural Opal Diamonds Pendant 18 Karat

GIA Certified 10.91 Carat Natural Opal Diamonds Pendant 18 Karat

Located in New York, NY

Play of color. GIA Certified 10.91ct. Natural Non treated Opal.

Category

2010s American Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Yellow Gold

Classic Platinum 4.65ctw GIA Very Fiery Opal w/ Diamond Halo Ring
Classic Platinum 4.65ctw GIA Very Fiery Opal w/ Diamond Halo Ring

Classic Platinum 4.65ctw GIA Very Fiery Opal w/ Diamond Halo Ring

Located in Montclair, NJ

Condition: Excellent condition! Comes with original GIA certification for the opal. Stock Number: MK-170105136 --Certification Details:-- Laboratory: GIA Report Number: 1232813096 S...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Platinum

Estate Platinum GIA 3.05ctw Oval Gray Opal & Baguette Diamond Cocktail Ring
Estate Platinum GIA 3.05ctw Oval Gray Opal & Baguette Diamond Cocktail Ring

Estate Platinum GIA 3.05ctw Oval Gray Opal & Baguette Diamond Cocktail Ring

Located in Montclair, NJ

Excellent condition! Comes w/ GIA certification for the opal! Stock Number: MK-49095183 --Certification Details:-- Laboratory: GIA Report Number: 5232455194 Shape: Oval Cutting Styl...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Platinum

Platinum GIA 2.33ctw Exceptional Colorful Black Opal Long Baguette Diamond Ring
Platinum GIA 2.33ctw Exceptional Colorful Black Opal Long Baguette Diamond Ring

Platinum GIA 2.33ctw Exceptional Colorful Black Opal Long Baguette Diamond Ring

Located in Montclair, NJ

Ring Measurements: 10.4mm (0.41") (north to south) , 12.1mm (0.47")(east to west, side to side, diamond to diamond), 2mm (bottom of the shank) Ring Height: 7mm rise off the finger St...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

GIA Black Opal Australian Platinum Diamond Vintage Ring Fire Solid Huge 6.79 CTS
GIA Black Opal Australian Platinum Diamond Vintage Ring Fire Solid Huge 6.79 CTS

GIA Black Opal Australian Platinum Diamond Vintage Ring Fire Solid Huge 6.79 CTS

Located in Sylvania, GA

Old South Jewels proudly presents...LUXURY GIA CERTIFIED SOLID AUSTRALIAN BLACK OPAL & DIAMOND VINTAGE PLATINUM RING!

Category

20th Century Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

Platinum GIA 5.48ctw Bright Blue Black Opal w/ Baguette Diamond Shoulders Ring
Platinum GIA 5.48ctw Bright Blue Black Opal w/ Baguette Diamond Shoulders Ring

Platinum GIA 5.48ctw Bright Blue Black Opal w/ Baguette Diamond Shoulders Ring

Located in Montclair, NJ

Ring Measurements: 13.3mm (0.52") (top of the ring. north to south) , 13.7mm (0.54")(east to west, diamond to diamond), 2.7mm (bottom of the shank) Ring Height: 8.9mm rise off the fi...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Platinum

GIA Opal Vintage Pendant 14K Gold Australian Natural Huge Solid Rainbow 6.64 Cts
GIA Opal Vintage Pendant 14K Gold Australian Natural Huge Solid Rainbow 6.64 Cts

GIA Opal Vintage Pendant 14K Gold Australian Natural Huge Solid Rainbow 6.64 Cts

Located in Sylvania, GA

Old South Jewels proudly presents. GIA AUSTRALIAN OPAL VINTAGE 14K SOLID GOLD PENDANT!

Category

Late 20th Century Pendant Necklaces

Materials

Diamond, Opal, Black Opal, Gold, 14k Gold

Art Deco Platinum 4 Carat Black Opal and Diamond Ring GIA Certified
Art Deco Platinum 4 Carat Black Opal and Diamond Ring GIA Certified

Art Deco Platinum 4 Carat Black Opal and Diamond Ring GIA Certified

Located in Cape May, NJ

Era: Art Deco Hallmarks: 10% IR, PLAT Composition: Platinum Primary Stone: Black Opal Stone Carat Weight: Approximately 4 Carats Accent Stone: Baguette and Round Cut Diamonds A...

Category

Vintage 1920s Unknown Art Deco Cocktail Rings

Materials

Opal, Platinum

Platinum GIA 3.22ctw Blue Green Black Opal & Baguette Diamond Sides Classic Ring
Platinum GIA 3.22ctw Blue Green Black Opal & Baguette Diamond Sides Classic Ring

Platinum GIA 3.22ctw Blue Green Black Opal & Baguette Diamond Sides Classic Ring

Located in Montclair, NJ

Ring Measurements: 10.4mm (0.41") (north to south) , 2.2mm (bottom of the shank) Ring Height: 7.6mm rise off the finger Condition: Excellent condition! Comes w/ GIA certification for...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Platinum

Vintage 14k Yellow Gold GIA Opal Rondelle Beads Graduated 22" Strand Necklace
Vintage 14k Yellow Gold GIA Opal Rondelle Beads Graduated 22" Strand Necklace

Vintage 14k Yellow Gold GIA Opal Rondelle Beads Graduated 22" Strand Necklace

Located in Montclair, NJ

Excellent overall condition. Comes w/ GIA certification for 1 randomly picked opal. Stock Number: MK-49010394 --Certification Details:-- Laboratory: GIA GIA Report Number: 223538781...

Category

20th Century Beaded Necklaces

Materials

Opal, Gold, 14k Gold, Yellow Gold

GIA Certified 3.85 Carat Opal Diamond Garnet Platinum Gold Pendant Necklace
GIA Certified 3.85 Carat Opal Diamond Garnet Platinum Gold Pendant Necklace

GIA Certified 3.85 Carat Opal Diamond Garnet Platinum Gold Pendant Necklace

Located in Stamford, CT

GIA certified natural semi black (dark gray) custom shape opal with orange, green and blue broad flash.

Category

Early 20th Century Pendant Necklaces

Materials

Diamond, Opal, Garnet, Gold, 18k Gold, Yellow Gold, Platinum

Vintage 18k Gold 61.40ctw GIA Oval Cabochon Opal & Diamond Pin Brooch Pendant
Vintage 18k Gold 61.40ctw GIA Oval Cabochon Opal & Diamond Pin Brooch Pendant

Vintage 18k Gold 61.40ctw GIA Oval Cabochon Opal & Diamond Pin Brooch Pendant

Located in Montclair, NJ

Excellent condition! Comes w/ GIA certification for the opal! Stock Number: MK-170314703-23112420-EY --Certification Details:-- Laboratory: GIA Report Number: 2231113083 Shape: Oval...

Category

21st Century and Contemporary Brooches

Materials

Diamond, Opal, 18k Gold, White Gold

14k White Gold Gia Pear Opal Emerald & Diamond Halo Large Substantial Ring
14k White Gold Gia Pear Opal Emerald & Diamond Halo Large Substantial Ring

14k White Gold Gia Pear Opal Emerald & Diamond Halo Large Substantial Ring

Located in Montclair, NJ

Excellent overall condition. Comes w/ GIA certification for the opal! Stock Number: MK-160210969-24041918 --Certification Details:-- Laboratory: GIA Report Number: 5231232473 Shape:...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Emerald, Opal, White Gold

Magnificent 18k Gold GIA 12.25ctw Black Opal & Diamond Halo Cocktail Ring
Magnificent 18k Gold GIA 12.25ctw Black Opal & Diamond Halo Cocktail Ring

Magnificent 18k Gold GIA 12.25ctw Black Opal & Diamond Halo Cocktail Ring

Located in Montclair, NJ

Ring Measurements: 25.8mm (1") (north to south) - 22.2mm (0.87") (east to west), 2.6mm (bottom of the shank) Ring Height: 11.9mm rise off the finger Condition: Excellent condition! C...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Opal, Gold, 14k Gold, 18k Gold, White Gold, Yellow Gold

14K Gold 44.35ct GIA Cabochon Fiery Opal Marquise & Round Diamond Large Pendant
14K Gold 44.35ct GIA Cabochon Fiery Opal Marquise & Round Diamond Large Pendant

14K Gold 44.35ct GIA Cabochon Fiery Opal Marquise & Round Diamond Large Pendant

Located in Montclair, NJ

Condition: Estate statement piece. Comes w/ GIA certification for the opal. Excellent condition and ready to wear!

Category

1990s Pendant Necklaces

Materials

Diamond, Opal, 14k Gold, White Gold, Yellow Gold

New Platinum 6.4ctw GIA Oval Cabochon Fiery Gray Opal Round Diamond Halo Pendant
New Platinum 6.4ctw GIA Oval Cabochon Fiery Gray Opal Round Diamond Halo Pendant

New Platinum 6.4ctw GIA Oval Cabochon Fiery Gray Opal Round Diamond Halo Pendant

Located in Montclair, NJ

The pendant features a gorgeous GIA certified gray opal that is 100% natural and weighs exactly 5.19 carats.

Category

2010s American Pendant Necklaces

Materials

Diamond, Opal, Platinum

Antique Art Deco Platinum Natural Black Opal and Diamond Statement Ring - GIA
Antique Art Deco Platinum Natural Black Opal and Diamond Statement Ring - GIA

Antique Art Deco Platinum Natural Black Opal and Diamond Statement Ring - GIA

Located in Great Neck, NY

Beautiful Antique Art Deco Platinum Natural Black Opal and Diamond Statement Ring - GIA. This gorgeous art deco black opal ring is crafted in platinum.

Category

Vintage 1930s Art Deco Fashion Rings

Materials

Diamond, Opal, Platinum

New 18k Gold 46.6ctw GIA Oval Black Opal w/ Diamond Halo Large Pendant Necklace
New 18k Gold 46.6ctw GIA Oval Black Opal w/ Diamond Halo Large Pendant Necklace

New 18k Gold 46.6ctw GIA Oval Black Opal w/ Diamond Halo Large Pendant Necklace

Located in Montclair, NJ

Comes w/ GIA certification for the opal. Stock Number: EK-330254560-23030104-EY --Certification Details:-- Laboratory: GIA GIA Report Number: 6223712654 Shape: Oval Cutting Style: C...

Category

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Platinum GIA 21.78ctw Fiery Incredible Play Of Color Opal w/ Diamond Sides Ring
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Excellent overall condition! Comes w/ GIA certification for the opal! Stock Number: MK-410275063 --Certification Details:-- Laboratory: GIA Report Number: 5232465352 Shape: Oval Cut...

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Comes w/ GIA certification for the opal. Stock Number: MK-710113694 --Certification Details:-- Laboratory: GIA GIA Report Number: 5231322163 Shape: Oval Cutting Style: Double Caboch...

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Excellent condition! Comes w/ GIA certification for the opal. Stock Number: MK-38021534-PAR --Certification Details:-- Laboratory: GIA GIA Report Number: 2239388058 Shape: Oval Cutt...

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Halo Measurements: 27.70mm (1.09") (north to south) - 23.50mm (0.92") (east to west) Ring Height: 9.80mm rise off the finger Condition: Brand new custom made Badis Jewelers statement...

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Opal Gia For Sale on 1stDibs

Find the exact opal gia you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using gold, 14k gold and platinum. Our collection of these items for sale includes 87 vintage editions and 123 modern creations to choose from as well. If you’re looking for an opal gia from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 19th Century while another version may have been produced as recently as the 21st Century. For this particular piece, .5 carat and 1 carat are consistently popular carat weights. Creating an opal gia has been a part of the legacy of many jewelers, but those produced by ANGARA INC., Peter Suchy and Nazarelle are consistently popular. While most can agree that any opal gia from our collection can easily elevate most outfits, but the choice of an opal version from the 156 available is guaranteed to add a special touch to your ensemble. A cabochon version of this piece has appeal, but there are also oval cut and round cut versions for sale. When shopping for an opal gia, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Opal Gia?

The price for an opal gia starts at $125 and tops out at $645,000 with these rings, on average, selling for $1,499.

The Legacy of Opal in Jewelry Design

Opals were discovered in 400 BC, and since then five types have been found throughout the world. Before you start shopping for mysteriously beautiful vintage opal rings and other opal jewelry, learn about the different varieties of the gem — and find out which historical figure was reportedly willing to trade his kingdom for a single stone.

Here is a little riddle for you: the month of October has two birthstones, but only one of them encompasses the colors of other birthstones. If you guessed opal, you’re right! (The other gemstone associated with the month of October is tourmaline.)

Opals are such unusual gemstones that there are too many old-wives tales associated with them, like if you’re a blond, wearing an opal necklace will protect your locks from losing color. Opals were also very fashionable in the early 19th century, up until the publication of Sir Walter Scott’s novel Anne of Geierstein in 1829. The title heroine wears an opal and succumbs to an untimely death. However, the British monarchy, and in particular Queen Victoria, did not let this story get in their way, and they frequently gifted opals to friends and family members. October babies should disregard the noise and proudly wear their opals!

There are five types of precious opals: boulder opal, fire opal, crystal/water opal, black opal, and white/light opal. Each variety is distinguished by its color.

So, where does the name come from? The word opal is thought to originate from the Roman opalus or from the Sanskrit úpala (“precious stone”) or from the Greek opallios (“to see a color change”). So while there have been many names for the stones, opals were first discovered in 400 BC in Ethiopia. But the early reference that comes up most often in history books is from the Roman philosopher Pliny the Elder, who wrote about it in 75 AD. In his text he refers to it as opali. The Romans were big fans of opal, Mark Antony was so enamored by it that, as the story goes, he was willing to trade a portion of his kingdom for a single opal.

There's a wide variety of antique and vintage opal jewelry on 1stDibs (and you won't have to trade your kingdom for it).