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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
Category

2010s Ethiopian Loose Gemstones

Materials

Opal

15.54 Carat Oval Opal GIA Certified
15.54 Carat Oval Opal GIA Certified
$1,200
W 0.96 in D 0.45 in L 0.52 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
Category

2010s Australian Loose Gemstones

Materials

Opal

8.01ct Freeform Gray Opal GIA Certified Australia
8.01ct Freeform Gray Opal GIA Certified Australia
$6,400
W 0.64 in D 0.21 in L 0.59 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
Category

2010s Australian Loose Gemstones

Materials

Opal

6.39ct Freeform Gray Opal GIA Certified Australia
6.39ct Freeform Gray Opal GIA Certified Australia
$5,600
W 0.71 in D 0.22 in L 0.48 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
Category

2010s Australian Loose Gemstones

Materials

Opal, Black Opal

1.42ct Oval Cabochon Black Opal GIA Certified
1.42ct Oval Cabochon Black Opal GIA Certified
$2,560
W 0.38 in D 0.12 in L 0.29 in
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
Category

2010s Loose Gemstones

Materials

Opal, Black Opal

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. Report: 6224937405 Round
Category

2010s American Solitaire Rings

Materials

Opal, 18k Gold, Yellow Gold

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
Category

Late 20th Century Pendant Necklaces

Materials

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

Platinum Baguette Diamond GIA Certified 11.01 Carat Australian Black Opal Ring
Located in Los Angeles, CA
lustrous GIA Certified Oval Australian Black Opal cabochon surrounded by a double row of beautiful baguette
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

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
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Opal, 14k Gold

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
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Opal, Platinum

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
Category

21st Century and Contemporary North American Modern Dome Rings

Materials

Diamond, Opal, White Gold

Platinum GIA Certified 7.46 Carat Oval Lightning Ridge Opal Engagement Ring
Located in Los Angeles, CA
lustrous Lightning Ridge Australian Gray Opal cabochon surrounded by beautiful baguette diamonds in a
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

Diamond, Opal, Black Opal, Platinum

Gia Certified 8.04ct Natural Cabochon Opal Diamonds Cocktail Ring 14kt
Located in New York, NY
Play of color. GIA Certified 8.04ct. Natural Non treated Opal ring. Report: 5222531468 Oval
Category

2010s American Solitaire Rings

Materials

Diamond, Opal, 14k Gold, Yellow Gold

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
Category

21st Century and Contemporary Retro Cocktail Rings

Materials

Diamond, Opal, Platinum

Platinum GIA Certified 6.78 Carat Lightning Ridge Black Opal Engagement Ring
Located in Los Angeles, CA
lustrous Lightning Ridge Australian Black Opal cabochon surrounded by beautiful baguette diamonds in a
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

Diamond, Opal, Black Opal, Platinum

Natural Ethiopian Opal Sapphire Necklace 14k Gold 11.5 TCW GIA Certified
Located in Brooklyn, NY
Natural Fine Quality Ethiopian Pear Cabochon Opal and Sapphire Necklace 14k Gold 17" 11.5 TCW GIA
Category

2010s American Pendant Necklaces

Materials

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

Natural Opal Diamond Pendant W/ Gold Chain 3.25 TCW GIA Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Opal Diamond Pendant with 18" Gold Chain 3.25 TCW GIA Certified
Category

2010s American Pendant Necklaces

Materials

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

GIA Certified Large Carved Opal Rose Gold Frame Pendant Necklace
Located in Stamford, CT
Hand carved opal pendant and necklace. Intricate blue green opal carvings of a woman in flowing
Category

Mid-20th Century Pendant Necklaces

Materials

Opal, Gold, 14k Gold, Rose Gold

Natural White Opal Diamond Ring 14k Gold 11 TCW GIA Certified
Located in Brooklyn, NY
Certified, Inspected, and Appraised by GIA, Gemological Institute of America 50 West 47th St. New York
Category

2010s American Engagement Rings

Materials

Diamond, Opal, 14k Gold, White Gold

GIA Certified 5.38 Carat Black Opal and Diamond Ballerina Vintage Platinum Ring
Located in Miami, FL
GIA Certified vintage 5.83 carat black opal and diamond halo ballerina ring in platinum 900
Category

1990s Art Deco Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

Australian Black Opal & Diamond Pendant 18" 14k Y Gold 4.45 TCW GIA Certified
Located in Brooklyn, NY
Australian Black Opal & Diamond Pendant 18" 14k Y Gold 4.45 TCW GIA Certified $7,950 212090 MADE
Category

1990s American Drop Necklaces

Materials

Diamond, Opal, Black Opal, Gold

Peter Suchy GIA Certified 7.55 Carat Black Opal Diamond Platinum Cocktail Ring
By Peter Suchy
Located in Stamford, CT
with a halo of round diamonds. Gia Certified. The opal is from an estate circa 1950. Vivid green, blue
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

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
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

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

GIA Certified Natural Opal & Yellow Sapphire Pendant with Retractable Clasp 18kt
Located in New York, NY
GIA Certified Natural Opal Pendant Report 6213047638 Please see attached report of proper details
Category

2010s American Pendant Necklaces

Materials

Opal, Yellow Sapphire, 18k Gold, Yellow Gold

GIA Certified 4.07 CT Natural Opal Diamond 14K White Gold Ring
Located in Westport, CT
A majestic 14K white gold natural opal ring, accompanied by a GIA certificate, report #: 1192097284
Category

20th Century North American Cocktail Rings

Materials

Diamond, Opal, White Gold

Platinum Diamond GIA Certified 8.70 Carat Rare Australian Black Opal Ring
Located in Los Angeles, CA
Latest of my creations. A breathtaking Art Deco Inspired Very Rare Multi Colored GIA Certified Lightning
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

Diamond, Black Opal, Platinum

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
Category

1990s Contemporary Cocktail Rings

Materials

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

GIA Certified 9.00 Carats Natural Black Opal Men's Fashion Ring in Yellow Gold
Located in New York, NY
A dashing men's fashion ring, showcasing a 9.00 carats elongated cabochon gemstone certified by GIA
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Opal, Black Opal, 18k Gold, Yellow Gold

GIA Certified 35 Carat Marcus & Co Australian Black Opal in 18K Gold Pendant
By Marcus & Co.
Located in Miami, FL
perfectly complements the opals. Signed by the renowned "Marcus & Co" and GIA certified, this pendant
Category

Vintage 1950s Retro Pendant Necklaces

Materials

Black Opal, Gold, 18k Gold, Yellow Gold

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
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
By Gad & Co.
Located in Miami, FL
with GIA certification. The opal is paired with a halo of 10 round-cut aquamarine stones and 2 oval-cut
Category

21st Century and Contemporary North American Art Deco Cocktail Rings

Materials

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

18K Two Tone Gold Halo Diamond GIA Certified 11 Carat Black Opal Necklace
Located in Los Angeles, CA
Yellow Gold, .750. Stones- 1 Genuine GIA Certified Australian Black Opal 11.04 Carats, 1 GIA Certified
Category

2010s Modern Pendant Necklaces

Materials

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

18K White Gold Halo Diamond GIA Certified 7.51 Carat Radiant Cut Fire Opal Ring
Located in Los Angeles, CA
Fire Opal 7.51 Carats, 124 Round Diamonds F-G Color VS1-VS2 Clarity 1.44 Carats. GIA Identification
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Opal, Fire Opal, 18k Gold, Rose Gold, White Gold

GIA Certified 27.03 Carat Opal Ruby Diamond 14k Two Tone Gold Pendant Necklace
Located in Stamford, CT
1960's Opal, ruby and diamond pendant necklace. GIA certified 27.03 carat pear shape opal with a
Category

Mid-20th Century Pendant Necklaces

Materials

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

GIA Certified 4.09-Carat White Opal and Diamond Halo in Platinum and Gold Ring
Located in Miami, FL
GIA certified 4.09-carat white opal with a vibrant array of colors. This Opal comes from the mines
Category

2010s Art Deco Cocktail Rings

Materials

Diamond, Opal, Gold, Platinum

GIA Certified 4.09-carat White Opal and Diamond Halo in Platinum and Gold Ring
Located in Miami, FL
GIA certified 4.09-carat white opal with a vibrant array of colors. This Opal comes from the mines
Category

2010s Art Deco Cocktail Rings

Materials

Diamond, Opal, Gold, Platinum

21st Century GIA Opal Diamond Cocktail Platinum Ring
Located in Miami, FL
measures 24mm x 13mm high. Showcasing a prominent four-prong set cosmic GIA certified natural opal
Category

Vintage 1970s Art Deco Cocktail Rings

Materials

Diamond, Opal, 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
Category

21st Century and Contemporary North American Cocktail Rings

Materials

Aquamarine, Opal, Black Opal, Platinum

GIA Natural Black Opal 5.40 ct and Diamond Ring in Platinum
Located in La Jolla, CA
one side, all in a Platinum setting. Total black opal weight is 5.40 carats and is GIA certified
Category

20th Century North American Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA Vintage Australian Opal & Diamond Ring in Yellow Gold
Located in Bloomington, MN
.16ctw Round Diamonds in the form of glittering shoulder details. The natural opal is GIA certified. The
Category

21st Century and Contemporary Contemporary Fashion Rings

Materials

Diamond, Opal, 14k Gold, Yellow Gold

GIA 3.59 ct Black Opal and Diamond 3-stone Ring in Platinum
Located in La Jolla, CA
GIA Certified 3.59 carat Black Opal and Diamond 3-stone Ring in Platinum Black Opal and Diamond
Category

21st Century and Contemporary North American Three-Stone Rings

Materials

Diamond, Opal, Black Opal, Platinum

GIA Natural Black Opal 6.23 carats and Diamond Cocktail Ring in Platinum
Located in La Jolla, CA
GIA certified Natural Black Opal 6.23 ct and Diamond Cocktail Ring in Platinum Natural certified
Category

21st Century and Contemporary North American Cocktail Rings

Materials

Diamond, Opal, Black Opal, Platinum

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
Category

Antique 19th Century Pendant Necklaces

Materials

Opal, Gold, 14k Gold

GIA Black Opal and Diamond Pendant Necklace in Platinum and 18k White Gold
Located in La Jolla, CA
GIA Certified Black Opal and Diamond Pendant Necklace in Platinum and 18k White Gold Black Opal
Category

21st Century and Contemporary North American Pendant Necklaces

Materials

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

18K Black Opal Australian Diamond Vintage Ring GIA Solid Rainbow Fine 7.08 CTS!
Located in Sylvania, GA
Old South Jewels proudly presents...LUXURY. RARE GIA CERTIFIED SOLID AUSTRALIAN BLACK OPAL
Category

20th Century Australian Cocktail Rings

Materials

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

GIA 7.17ct natural cabochon opal diamonds sunburst cocktail ring 14kt a+ colors
Located in New York, NY
Play of color. GIA Certified 5.97ct. Natural Non treated Opal ring. Report: 2145457599 Oval
Category

2010s American Solitaire Rings

Materials

Diamond, Opal, 14k Gold, White Gold

NEW 14k Gold 6.31ctw GIA Oval Cabochon Opal w/ Emerald Halo Pendant Necklace
Located in Montclair, NJ
from solid 14k yellow gold. The pendant features a gorgeous, GIA certified, natural white opal that
Category

2010s American Pendant Necklaces

Materials

Emerald, Opal, 14k Gold, Yellow Gold

GIA Grey Opal 59.90 carat with Diamond Halo Pendant in Platinum /18k White Gold
Located in La Jolla, CA
GIA certified Grey Opal 59.90 carat with Diamond Halo Pendant in Platinum and 18k White Gold Large
Category

21st Century and Contemporary North American Pendant Necklaces

Materials

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

18k Gold GIA 19.49ct Oval Gray Opal Pendant w/ Diamond Sapphire & Emerald Spray
Located in Montclair, NJ
solid 18k yellow and white gold. The pendant features a gorgeous, GIA certified, gray opal that is 100
Category

Late 20th Century Unknown Pendant Necklaces

Materials

Diamond, Emerald, Opal, Sapphire, 14k Gold, 18k Gold, White Gold, Yellow...

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
Category

2010s Loose Gemstones

Materials

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
Category

21st Century and Contemporary Loose Gemstones

Materials

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
Category

2010s Loose Gemstones

Materials

Fire 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
Category

2010s Loose Gemstones

Materials

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
Category

2010s Loose Gemstones

Materials

Fire Opal

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
Category

2010s American Cocktail Rings

Materials

White Diamond, Black Opal, Fire Opal, Platinum

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
Category

Vintage 1970s More Bracelets

Materials

Opal, Yellow Gold, 18k Gold

Australian 19.06ct Boulder Opal, Diamond, 18k Gold & Platinum Bracelet
Located in MAIN BEACH, QLD
GIA-certified gemologist THE GRYFFIN OPAL DIFFERENCE By investing in solid Australian opal jewellery
Category

1990s Australian Bangles

Materials

Diamond, Opal, 18k Gold, Platinum

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
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Opal, 14k Gold

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Gia Certified Opal For Sale on 1stDibs

On 1stDibs, you can find the most appropriate gia certified opal for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Gold, Platinum and Yellow Gold. Find an antique version now, or shop for 9 vintage or 18 modern creation for a more contemporary example of these cherished accessories. If you’re looking for a gia certified opal from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 20th Century while another version may have been produced as recently as the 21st Century. There have been many well-made iterations of the classic gia certified opal over the years, but those made by Peter Suchy, David Morris and Merkaba are often thought to be among the most beautiful. Take a look at a gia certified opal featuring Diamond from our inventory today to add the perfect touch to your look. See these pages for an oval cut iteration of this accessory, while there are also round cut cut and cabochon cut versions available here, too. Most of our gia certified opal for sale are for women, but there are 11 pieces available to browse for men.

How Much is a Gia Certified Opal?

Prices for a gia certified opal can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $2,500 and can go as high as $60,000, while this accessory, on average, fetches $11,900.

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).

Questions About Gia Certified Opal
  • 1stDibs ExpertAugust 17, 2021
    In the United States, diamond rings are certified by an official gemological laboratory known as the Gemological Institute of America. A certified diamond ring means that the diamond has undergone a quality analysis by experts at an institution such as the GIA and these experts have issued a lab report that is indicative of the grading process.
  • 1stDibs ExpertApril 5, 2022
    Yes, Cartier diamonds are indeed GIA certified. The Gemological Institute of America (GIA) works closely with Cartier and certifies everything from the cut and clarity to the color of the gem. Shop a collection of expertly vetted Cartier jewelry from some of the world’s top sellers on 1stDibs.
  • 1stDibs ExpertFebruary 22, 2021
    When a diamond is GIA certified, it means that the stone has undergone the meticulous set of grading procedures that have been established by the Gemological Institute of America. The GIA is not a jeweler — it is an independent, nonprofit group that sets the standards for determining the quality of a diamond.
  • 1stDibs ExpertMarch 22, 2022
    Whether Neil Lane diamonds are GIA-certified or not depends on the piece. All of the diamonds featured in rings and other jewelry designs from the Neil Lane Couture collection do carry GIA certification. Pieces made for third-party retailers may not. On 1stDibs, find a collection of Neil Lane jewelry.
  • 1stDibs ExpertFebruary 13, 2023
    While diamond studs don't need to be GIA-certified to be sold, experts typically recommend that you only purchase diamonds that carry certification from the Gemological Institute of America (GIA) or Authentic Gem Security Lab (AGSL). Certifications bring transparency to the buying process, allowing you to know the level of quality of a diamond before you purchase it. Shop a collection of vintage and modern diamond gemstone earrings from some of the world’s top jewelers on 1stDibs.
  • 1stDibs ExpertAugust 15, 2024
    Many experts believe that buying a GIA-certified diamond is worth it. The Gemological Institute of America (GIA) has a well-established reputation for providing accurate, trustworthy ratings and certifications. A diamond that carries a GIA certification has undergone rigorous examinations and tests to assess its quality, which can make it a good investment. Find a diverse assortment of diamond jewelry on 1stDibs.