Skip to main content

Effy Diamonds

to
66
206
4
187
75
23
9
4
198
1
Effy Blue Topaz & Diamond Halo Pendant in 18k Rose Gold Necklace
Effy Blue Topaz & Diamond Halo Pendant in 18k Rose Gold Necklace

Effy Blue Topaz & Diamond Halo Pendant in 18k Rose Gold Necklace

By Effy

Located in Houston, TX

Effy Blue Topaz & Diamond Halo Pendant in 18k Rose Gold Necklace Showcasing Effy's signature use of vibrant gemstones and fine craftsmanship, this elegant pendant necklace is crafte...

Category

2010s Unknown Pendant Necklaces

Materials

White Diamond, Diamond, Topaz, Blue Topaz, 14k Gold, Rose Gold

Effy 14k Yellow Gold Watercolors Gems & Diamond Ring Size 5.5
Effy 14k Yellow Gold Watercolors Gems & Diamond Ring Size 5.5

Effy 14k Yellow Gold Watercolors Gems & Diamond Ring Size 5.5

By Effy

Located in Boca Raton, FL

This exquisite authentic Effy ring is crafted in solid 14k yellow gold and features a vibrant watercolor-style arrangement of multicolored gemstones accented with sparkling natural d...

Category

21st Century and Contemporary Modern Cluster Rings

Materials

Diamond, Multi-gemstone, 14k Gold, Yellow Gold

Effy 14 Karat White Gold Sapphire and Diamond Pendant #21193
Effy 14 Karat White Gold Sapphire and Diamond Pendant #21193

Effy 14 Karat White Gold Sapphire and Diamond Pendant #21193

By Effy

Located in Washington Depot, CT

Effy 14 Karat White Gold Sapphire and Diamond Pendant- This stunning pendant features seven round brilliant cut diamonds and eight blue sapphires set in beautifully detailed 14K whi...

Category

20th Century Contemporary Charm Bracelets

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold

Effy 18k Yellow Gold and Sterling Silver Diamond Cross Pendant #24749
Effy 18k Yellow Gold and Sterling Silver Diamond Cross Pendant #24749

Effy 18k Yellow Gold and Sterling Silver Diamond Cross Pendant #24749

By Effy

Located in Washington Depot, CT

Effy 18k Yellow Gold and Sterling Silver Diamond Cross Pendant Refined and radiant, this 18K yellow gold and sterling silver Effy pendant blends two-tone elegance with subtle sparkl...

Category

20th Century Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold, Sterling Silver

Effy 14K Yellow Gold Carved Onyx Diamond Necklace 0.16ct NWT 18”
Effy 14K Yellow Gold Carved Onyx Diamond Necklace 0.16ct NWT 18”

Effy 14K Yellow Gold Carved Onyx Diamond Necklace 0.16ct NWT 18”

By Effy

Located in West Hempstead, NY

Retail price: $3,624. Designer: Effy 14K yellow gold Carved black onyx 0.16ctw natural GH SI round diamonds 5.1 grams 18 inches length Lobster clasp New with tag Retail: $3,624 A bol...

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

18 Karat Two-Tone Gold Effy Fashion Ring with Diamonds
18 Karat Two-Tone Gold Effy Fashion Ring with Diamonds

18 Karat Two-Tone Gold Effy Fashion Ring with Diamonds

By Effy

Located in Stamford, CT

18Kt Two Tone Gold Effy Fashion Ring with Diamonds. Size 7.75 12.1 grams total weight.

Category

2010s Modern Fashion Rings

Materials

Diamond, 18k Gold

EFFY 1.00 Carat Diamond Encrusted Band Ring 14 Karat Gold
EFFY 1.00 Carat Diamond Encrusted Band Ring 14 Karat Gold

EFFY 1.00 Carat Diamond Encrusted Band Ring 14 Karat Gold

By Effy

Located in Miami, FL

EFFY 1.00 Carat Diamond Encrusted Band Ring. The ring features 60 round diamonds totaling approx 1 carat.

Category

Early 2000s Wedding Rings

Materials

Diamond, 14k Gold, Yellow Gold

Designer Effy Mens Onyx Diamond Horse Pendant 14kt Gold 22in NWT
Designer Effy Mens Onyx Diamond Horse Pendant 14kt Gold 22in NWT

Designer Effy Mens Onyx Diamond Horse Pendant 14kt Gold 22in NWT

By Effy

Located in West Hempstead, NY

This designer Effy men's pendant necklace is crafted in 14kt yellow gold and features a bold horse motif accented with black onyx and natural diamonds.

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

Vintage Effy 14K Multicolor Baguette Sapphire Diamond Line Bracelet 14.51ctw 7”
Vintage Effy 14K Multicolor Baguette Sapphire Diamond Line Bracelet 14.51ctw 7”

Vintage Effy 14K Multicolor Baguette Sapphire Diamond Line Bracelet 14.51ctw 7”

By Effy

Located in Winter Springs, FL

Details: • Designer: Effy • Metal: 14K yellow gold • Gemstones: Natural multicolored sapphires • Total Sapphire Weight: 14.25 carats (exact) • Diamond Details: Round brilliant c...

Category

2010s Contemporary Modern Bracelets

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Designer Effy White Topaz Diamond Enamel Ring 14kt Gold 9.80ct NWT
Designer Effy White Topaz Diamond Enamel Ring 14kt Gold 9.80ct NWT

Designer Effy White Topaz Diamond Enamel Ring 14kt Gold 9.80ct NWT

By Effy

Located in West Hempstead, NY

Original retail price 7,499. Designer Effy 14kt yellow gold 9.80ct emerald cut white topaz 0.17ctw natural GH SI1 I1 round diamonds Black enamel detailing 6.3 grams Ring size 7 New w...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Topaz, 14k Gold, Yellow Gold

Estate EFFY 14K Yellow Gold Tanzanite and Diamond Ring - VHK#315a
Estate EFFY 14K Yellow Gold Tanzanite and Diamond Ring - VHK#315a

Estate EFFY 14K Yellow Gold Tanzanite and Diamond Ring - VHK#315a

By Effy

Located in Hicksville, NY

Estate EFFY 14K Yellow Gold Tanzanite and Diamond Ring - VHK#315a Item Details: Year: 2000s Ring Size: (Sizable) Metal Type: [Hallmarked, and Tested] Weight: 4.1 grams Diamond Detai...

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Tanzanite, Gold, 14k Gold, Yellow Gold

EFFY Pink Sapphire & Diamond Ring - Yellow Gold 14k Oval .78ctw
EFFY Pink Sapphire & Diamond Ring - Yellow Gold 14k Oval .78ctw

EFFY Pink Sapphire & Diamond Ring - Yellow Gold 14k Oval .78ctw

By Effy

Located in Greensboro, NC

Size: 9 1/2 Sizing Fee: Up 3 sizes for $35 or Down 2 sizes for $35 Brand: EFFY Metal Content: 14k Yellow Gold Stone Information Natural Sapphire Treatment: Heating Carat(s): .60c...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Pink Sapphire, 14k Gold, Yellow Gold

Effy .89 Carat Diamond White Gold Feather Dangle Drop Earrings
Effy .89 Carat Diamond White Gold Feather Dangle Drop Earrings

Effy .89 Carat Diamond White Gold Feather Dangle Drop Earrings

By Effy

Located in Stamford, CT

Effy flexible feather diamond earrings. Feather shaped 14k white gold dangle drop earrings with 148 round cut diamonds. 148 round diamonds, G-K SI-I approx. .89cts 14k white gold ...

Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Gold, 14k Gold, White Gold

Effy 14K Gold Pink Sapphire & Diamond Ring Size 7 #16673
Effy 14K Gold Pink Sapphire & Diamond Ring Size 7 #16673

Effy 14K Gold Pink Sapphire & Diamond Ring Size 7 #16673

By Effy

Located in Washington Depot, CT

Vintage Effy 14K Yellow Gold Pink Sapphire and Diamond Ring Size 7 JAGi Certified- This stunning ring features one emerald cut pink sapphire (6.9 mm x 5.2 mm), 18 baguette diamonds ...

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Pink Sapphire, 14k Gold, Yellow Gold

Vintage EFFY Designer RBC Diamond Gold Cluster 4 Row Halo Ring
Vintage EFFY Designer RBC Diamond Gold Cluster 4 Row Halo Ring

Vintage EFFY Designer RBC Diamond Gold Cluster 4 Row Halo Ring

By Effy

Located in Montreal, QC

Simply Beautiful! Vintage EFFY Designer Diamond Gold Cluster Ring. Hand set with 1.30tcw Round Brilliant Cut Diamonds, including shank.

Category

Late 20th Century Modernist Cluster Rings

Materials

Diamond, Gold, 14k Gold, White Gold

Effy Multicolored Sapphire and Diamond Rainbow Band Ring 14K Yellow Gold
Effy Multicolored Sapphire and Diamond Rainbow Band Ring 14K Yellow Gold

Effy Multicolored Sapphire and Diamond Rainbow Band Ring 14K Yellow Gold

By Effy

Located in Scottsdale, AZ

This spectacular Effy ring is a true feast for the eyes, bursting with a vibrant mosaic of natural multicolor sapphires and sparkling round brilliant cut diamonds set in warm 14 kara...

Category

21st Century and Contemporary Contemporary Band Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold, Gold

Effy Natural Diamond Pave 14-Karat Multi-Band Ring In Stock
Effy Natural Diamond Pave 14-Karat Multi-Band Ring In Stock

Effy Natural Diamond Pave 14-Karat Multi-Band Ring In Stock

By Effy

Located in Boca Raton, FL

Effy 14k Rose Gold Natural Diamond Pave Multi-Band Ring Category: Details Designer: EFFY Material: 14k Rose Gold Diamond Details: There are approximately 0.35 carats of natural, pav...

Category

21st Century and Contemporary American Modern Fashion Rings

Materials

Diamond, Gold, 14k Gold, Rose Gold

Effy 14 Karat White Gold Sapphire and Baguette Diamond Halo Ring
Effy 14 Karat White Gold Sapphire and Baguette Diamond Halo Ring

Effy 14 Karat White Gold Sapphire and Baguette Diamond Halo Ring

By Effy

Located in Scottsdale, AZ

Designer: Effy Material: 14K white gold Sapphire: 1 oval cut = 0.60cttw Diamonds: 25 baguette cut = 0.30cttw Color: G Clarity: SI1 Dimensions: ring top measures 1.98mm wide Ring Size...

Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Effy 14 Karat Rose Gold Pink Opal and Diamond Heart Necklace
Effy 14 Karat Rose Gold Pink Opal and Diamond Heart Necklace

Effy 14 Karat Rose Gold Pink Opal and Diamond Heart Necklace

By Effy

Located in Scottsdale, AZ

Designer: Effy Material: 14k rose gold Diamond: 6 round cut = 0.04cttw Color: H / I Clarity: I1-2 Opal: heart cut = 8.75cttw Dimensions: necklace measures approximately 18-inches in ...

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Opal, 14k Gold, Rose Gold

EFFY Sapphire Diamond Cluster Halo Ring - White Gold 14k Round 1.61ctw
EFFY Sapphire Diamond Cluster Halo Ring - White Gold 14k Round 1.61ctw

EFFY Sapphire Diamond Cluster Halo Ring - White Gold 14k Round 1.61ctw

By Effy

Located in Greensboro, NC

Size: 7 Sizing Fee: Up 2 sizes for $60 or Down 1 size for $40 Brand: EFFY Metal Content: 14k White Gold Stone Information Natural Sapphires Treatment: Heating Carat(s): 1.28ctw C...

Category

21st Century and Contemporary Cluster Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Effy Women's 14 Karat White Gold Diamond Butterfly Ring
Effy Women's 14 Karat White Gold Diamond Butterfly Ring

Effy Women's 14 Karat White Gold Diamond Butterfly Ring

By Effy

Located in Los Angeles, CA

Type: Ring Top: 20 mm Band Width: 16 mm Metal: White Gold Metal Purity: 14K Hallmarks: Effy 14K Total Weight: 4.1 Gram Size: 7.5 Condition: Pre Owned Stone Type: Diamond

Category

2010s American Fashion Rings

EFFY 14K Rose Gold Ruby & Diamond Ring with Two Stackable Bands
EFFY 14K Rose Gold Ruby & Diamond Ring with Two Stackable Bands

EFFY 14K Rose Gold Ruby & Diamond Ring with Two Stackable Bands

By Effy

Located in Miami, FL

A beautiful three-ring set featuring a signed EFFY ruby and diamond band in 14K rose gold, paired with two minimalist unbranded stacking rings for a chic, layered look.

Category

Early 2000s American Contemporary Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

Effy Contemporary 1.60 Carat Pink Sapphire Diamond 14k White Gold Cocktail Band
Effy Contemporary 1.60 Carat Pink Sapphire Diamond 14k White Gold Cocktail Band

Effy Contemporary 1.60 Carat Pink Sapphire Diamond 14k White Gold Cocktail Band

By Effy

Located in Towson, MD

This 14 karat white gold Effy ring pairs vivid pink sapphires with sparkling white diamonds in a wide, sculptural band.

Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, Pink Sapphire, 14k Gold, White Gold

EFFY 14K White Gold Invisible Set Blue Sapphire and Pave Diamond Necklace
EFFY 14K White Gold Invisible Set Blue Sapphire and Pave Diamond Necklace

EFFY 14K White Gold Invisible Set Blue Sapphire and Pave Diamond Necklace

By Effy

Located in Scottsdale, AZ

Designer: EFFY Material: 14K white gold Blue Sapphires: 9 baguette cut= 0.41cttw Diamonds: 56 round cut= 0.56cttw Color: G-H Clarity: SI1-SI2 Dimensions: the necklace measures 18.0” ...

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

EFFY Signed 14K Gold Diamond Lozenge Pendant Necklace with 1.25 Ct Emerald
EFFY Signed 14K Gold Diamond Lozenge Pendant Necklace with 1.25 Ct Emerald

EFFY Signed 14K Gold Diamond Lozenge Pendant Necklace with 1.25 Ct Emerald

By Effy

Located in Miami, FL

A striking statement of geometric luxury, this authentic EFFY pendant necklace is finely crafted in 14k yellow gold.

Category

2010s American Modern Pendant Necklaces

Materials

Diamond, White Diamond, Emerald, 14k Gold, Yellow Gold

Effy BH 14K Yellow Gold Ruby and Diamond Ladder Pendant Necklace #25054
Effy BH 14K Yellow Gold Ruby and Diamond Ladder Pendant Necklace #25054

Effy BH 14K Yellow Gold Ruby and Diamond Ladder Pendant Necklace #25054

By Effy

Located in Washington Depot, CT

Effy 14K Yellow Gold Ruby and Diamond Ladder Pendant Necklace- Bold yet refined, this Effy pendant features seven vivid rubies accented by 37 round brilliant cut diamonds.

Category

20th Century Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

EFFY Sapphire & Diamond Pendant Necklace Yellow Gold 14k 1.23ctw Rainbow Adjust
EFFY Sapphire & Diamond Pendant Necklace Yellow Gold 14k 1.23ctw Rainbow Adjust

EFFY Sapphire & Diamond Pendant Necklace Yellow Gold 14k 1.23ctw Rainbow Adjust

By Effy

Located in Greensboro, NC

Retail Price: $3,999.99 Brand: EFFY Metal Content: 14k Yellow Gold Stone Information Natural Sapphires Treatment: Heat & Diffusion Carat(s): .84ctw Cut: Round Color: Multi Natur...

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

EFFY Turquesa Diamond Huggie Hoop Halo Earrings-Yellow Gold 14k Cabochon 1.02ctw
EFFY Turquesa Diamond Huggie Hoop Halo Earrings-Yellow Gold 14k Cabochon 1.02ctw

EFFY Turquesa Diamond Huggie Hoop Halo Earrings-Yellow Gold 14k Cabochon 1.02ctw

By Effy

Located in Greensboro, NC

Retail Price: $2,250 Brand: EFFY Design: Turquesa Metal Content: 14k Yellow Gold Stone Information Natural Turquoise Cut: Rectangular Cabochon Color: Blue Stone Note: Sleeping B...

Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, 14k Gold, Yellow Gold

Effy Mother of Pearl Diamond Star Earrings 14K Yellow Gold 0.11ctw New
Effy Mother of Pearl Diamond Star Earrings 14K Yellow Gold 0.11ctw New

Effy Mother of Pearl Diamond Star Earrings 14K Yellow Gold 0.11ctw New

By Effy

Located in West Hempstead, NY

These stunning Designer Effy Mother of Pearl and Diamond Star Earrings in 14kt yellow gold feature a natural mother of pearl stone surrounded by 0.11ctw of natural GH SI round single...

Category

21st Century and Contemporary Drop Earrings

Materials

Diamond, Pearl, 14k Gold, Yellow Gold

Vintage Effy 14K White Gold Black & White Diamond Ring 8.3g Size 5.75 Designer
Vintage Effy 14K White Gold Black & White Diamond Ring 8.3g Size 5.75 Designer

Vintage Effy 14K White Gold Black & White Diamond Ring 8.3g Size 5.75 Designer

By Effy

Located in Addison, TX

Details: • Authentic Effy • Solid 14K White Gold • Natural Black & White Diamonds • Pavé Diamond Design • Black Diamond Center Accents • White Diamond Accent Stones • Designer...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Black Diamond, 14k Gold, White Gold

Effy 14k Yellow Gold Cushion Cut Amethyst & Diamond Ring, Circa 2010
Effy 14k Yellow Gold Cushion Cut Amethyst & Diamond Ring, Circa 2010

Effy 14k Yellow Gold Cushion Cut Amethyst & Diamond Ring, Circa 2010

By Effy

Located in Sewickley, PA

Crafted in 14k yellow gold this ring features a cushion cut amethyst set in a smooth bezel setting that frames the stone cleanly while enhancing its rich violet hue. The cushion shap...

Category

21st Century and Contemporary Solitaire Rings

Materials

Amethyst, Diamond, 14k Gold, Yellow Gold

EFFY Sapphire & Diamond Ring - Yellow Gold 14k Emerald Cut 1.42ctw Asymmetrical
EFFY Sapphire & Diamond Ring - Yellow Gold 14k Emerald Cut 1.42ctw Asymmetrical

EFFY Sapphire & Diamond Ring - Yellow Gold 14k Emerald Cut 1.42ctw Asymmetrical

By Effy

Located in Greensboro, NC

Size: 6 1/2 Sizing Fee: Up 1 1/2 sizes for $40 or Down 1/2 a size for $30 Brand: EFFY Metal Content: 14k Yellow Gold Stone Information Natural Sapphire Treatment: Heating Carat(s...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

1.5 Carat Emerald-Cut Sapphire and Diamond Gold Vintage EFFY Designer Ring
1.5 Carat Emerald-Cut Sapphire and Diamond Gold Vintage EFFY Designer Ring

1.5 Carat Emerald-Cut Sapphire and Diamond Gold Vintage EFFY Designer Ring

By Effy

Located in Montreal, QC

Simply Beautiful! Vintage EFFY Designer Emerald-Cut Sapphire and Diamond Gold Ring.

Category

Late 20th Century Cocktail Rings

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold

Effy 14k Rose Gold 0.66ctw Chocolate Brown & White Diamond Wide Crossover Ring
Effy 14k Rose Gold 0.66ctw Chocolate Brown & White Diamond Wide Crossover Ring

Effy 14k Rose Gold 0.66ctw Chocolate Brown & White Diamond Wide Crossover Ring

By Effy

Located in Montclair, NJ

--Stone(s):-- (11) Natural Genuine Diamonds - Round Brilliant Cut - Prong Set - Fancy Chocolate Brown Color - 0.56ctw (approx.) (30) Natural Genuine Diamonds - Round Brilliant Cut - ...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Brown Diamond, Gold, 14k Gold, Rose Gold

Effy Bita 14K White Gold and Diamond Heart Red Leather Bracelet #22292
Effy Bita 14K White Gold and Diamond Heart Red Leather Bracelet #22292

Effy Bita 14K White Gold and Diamond Heart Red Leather Bracelet #22292

By Effy

Located in Washington Depot, CT

Effy Bita 14K White Gold and Diamond Heart Red Leather Bracelet- Make a bold and romantic statement with this luxurious Bita bracelet by Effy.

Category

20th Century Link Bracelets

Materials

Diamond, 14k Gold, White Gold

EFFY Crossover Diamond Pendant Necklace 20" White Gold 14k Single .86ctw Stripes
EFFY Crossover Diamond Pendant Necklace 20" White Gold 14k Single .86ctw Stripes

EFFY Crossover Diamond Pendant Necklace 20" White Gold 14k Single .86ctw Stripes

By Effy

Located in Greensboro, NC

Brand: EFFY Design: Crossover Pendant Metal Content: 14k White Gold, 14k Yellow Gold, & 14k Rose Gold Stone Information Natural Diamonds Carat(s): .86ctw Cut: Single Color: G...

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 14k Gold, Rose Gold, White Gold, Yellow Gold

Effy 0.50 Carat Diamond Pave Button Earrings 14 Karat in Stock
Effy 0.50 Carat Diamond Pave Button Earrings 14 Karat in Stock

Effy 0.50 Carat Diamond Pave Button Earrings 14 Karat in Stock

By Effy

Located in Boca Raton, FL

Material: 14k White Gold Diamond Details: Approx. 0.50 of round brilliant diamonds. Diamonds are G/H in color and VS in clarity. Measurements: 0.45" x 0.45" x 0.55" Earrings Backs: B...

Category

21st Century and Contemporary Unknown Stud Earrings

Materials

Diamond, White Diamond, 14k Gold, White Gold

Effy Pink Sapphire and Diamond Huggie Hoops in 14 Karat Yellow Gold
Effy Pink Sapphire and Diamond Huggie Hoops in 14 Karat Yellow Gold

Effy Pink Sapphire and Diamond Huggie Hoops in 14 Karat Yellow Gold

By Effy

Located in Scottsdale, AZ

This gorgeous Effy pair of natural pink sapphire and diamond earrings is a vibrant and sophisticated celebration of color and fine gemstone craftsmanship that delivers maximum impact...

Category

21st Century and Contemporary Modern Hoop Earrings

Materials

Diamond, Pink Sapphire, 14k Gold, Yellow Gold

1.30 Carat Oval Emerald and Diamond Gold Vintage EFFY Designer Halo Ring
1.30 Carat Oval Emerald and Diamond Gold Vintage EFFY Designer Halo Ring

1.30 Carat Oval Emerald and Diamond Gold Vintage EFFY Designer Halo Ring

By Effy

Located in Montreal, QC

Simply Beautiful! Vintage EFFY Designer Emerald and Diamond Gold Halo Ring.

Category

Late 20th Century American Modernist Cocktail Rings

Materials

Diamond, Emerald, Gold, 14k Gold, White Gold, Yellow Gold

EFFY Australian Opal Tanzanite Diamond Ring - White Gold 14k Oval Cab .69ctw
EFFY Australian Opal Tanzanite Diamond Ring - White Gold 14k Oval Cab .69ctw

EFFY Australian Opal Tanzanite Diamond Ring - White Gold 14k Oval Cab .69ctw

By Effy

Located in Greensboro, NC

Size: 9 Sizing Fee: Up 2 1/2 sizes for $40 or Down 1 1/2 sizes for $40 Brand: EFFY Date: April 27, 2026 Metal Content: 14k White Gold Stone Information Natural Australian Opal Ca...

Category

21st Century and Contemporary Cocktail Rings

Materials

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

Effy 14k Rose Gold Pave Twist Diamond Drop Hoop Earrings 9.4g .38ct
Effy 14k Rose Gold Pave Twist Diamond Drop Hoop Earrings 9.4g .38ct

Effy 14k Rose Gold Pave Twist Diamond Drop Hoop Earrings 9.4g .38ct

By Effy

Located in Northbrook, IL

Elevate your style with these exquisite Effy hoop earrings. Crafted from 14k rose gold, these earrings feature a stunning array of round white diamonds, creating a captivating twist ...

Category

21st Century and Contemporary Hoop Earrings

Materials

Diamond, 14k Gold, Rose Gold

Effy 14k Rose & Yellow Gold Emerald & Pave Diamond Panther Wrap Band Ring
Effy 14k Rose & Yellow Gold Emerald & Pave Diamond Panther Wrap Band Ring

Effy 14k Rose & Yellow Gold Emerald & Pave Diamond Panther Wrap Band Ring

By Effy

Located in Montclair, NJ

Numerous Natural Genuine Diamonds - Round Brilliant Cut - Pave Set - Black Diamonds & Nice Brilliant White Diamonds - 0.65ctw (approx.)

Category

21st Century and Contemporary Cocktail Rings

Materials

Black Diamond, Emerald, Gold, 14k Gold, Rose Gold, Yellow Gold

6 Carat Red Garnet and Diamond Vintage EFFY Designer Gold Cocktail Ring
6 Carat Red Garnet and Diamond Vintage EFFY Designer Gold Cocktail Ring

6 Carat Red Garnet and Diamond Vintage EFFY Designer Gold Cocktail Ring

By Effy

Located in Montreal, QC

Simply Beautiful! Vintage EFFY Red Garnet and Diamond Gold Ring. Centering a securely Hand set 6 Carat Red Garnet.

Category

Late 20th Century American Modernist Cocktail Rings

Materials

Diamond, Garnet, Gold, 14k Gold, Yellow Gold

Effy 14 Karat Yellow Gold Diamond Pave Classica Ring Size 7 #20705
Effy 14 Karat Yellow Gold Diamond Pave Classica Ring Size 7 #20705

Effy 14 Karat Yellow Gold Diamond Pave Classica Ring Size 7 #20705

By Effy

Located in Washington Depot, CT

Effy 14 Karat Yellow Gold Diamond Pave Classica Ring Size 7 This sparkling ring features 16 round brilliant cut diamonds and 46 round single cut diamonds set in classic 14K yellow g...

Category

20th Century Contemporary Cluster Rings

Materials

Diamond, 14k Gold, Yellow Gold

Panther Effy 14K Rose Gold, 1.75 CTW Diamond and Emerald Panther Ring
Panther Effy 14K Rose Gold, 1.75 CTW Diamond and Emerald Panther Ring

Panther Effy 14K Rose Gold, 1.75 CTW Diamond and Emerald Panther Ring

By Effy

Located in Derby, NY

Effy 14K Rose Gold, 1.75 CTW Diamond and Emerald Panther Ring This stunning ring from the Effy Panther Collection is sure to make you stand out in a crowd!

Category

2010s More Rings

Materials

Diamond, Emerald, Rose Gold

EFFY Bouquet Diamond Cluster Halo Engagement Ring - White Gold 14k Round 1.00ctw
EFFY Bouquet Diamond Cluster Halo Engagement Ring - White Gold 14k Round 1.00ctw

EFFY Bouquet Diamond Cluster Halo Engagement Ring - White Gold 14k Round 1.00ctw

By Effy

Located in Greensboro, NC

Retail Price: $4000 Size: 7 Sizing Fee: Up 2 sizes for $40 or Down 1 size for $40 Brand: EFFY Collection: Bouquet Metal Content: 14k White Gold Stone Information Natural Diamond...

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Effy Black and White Diamond Large Butterfly Cocktail Ring 14 Karat Yellow Gold
Effy Black and White Diamond Large Butterfly Cocktail Ring 14 Karat Yellow Gold

Effy Black and White Diamond Large Butterfly Cocktail Ring 14 Karat Yellow Gold

By Effy

Located in Scottsdale, AZ

This fabulous Effy butterfly ring is crafted in brushed 14 karat yellow gold and set with an array of round-cut diamonds in contrasting shades of white and black.

Category

21st Century and Contemporary Unknown Contemporary Cocktail Rings

Materials

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

EFFY 14k Gold Coiled Panther Ring with 1.38ct Diamonds & Emeralds
EFFY 14k Gold Coiled Panther Ring with 1.38ct Diamonds & Emeralds

EFFY 14k Gold Coiled Panther Ring with 1.38ct Diamonds & Emeralds

By Effy

Located in Sausalito, CA

14k yellow gold coiled panther diamond and emerald ring. Consisting of: Diamonds 1.38cttw. Clarity VS1 Color H Emeralds .05ct tw. All set stones weight/clarity & color are ap...

Category

21st Century and Contemporary Cocktail Rings

EFFY Dark Blue Sapphire and Diamond Flower Wide Band Ring 14k White Gold
EFFY Dark Blue Sapphire and Diamond Flower Wide Band Ring 14k White Gold

EFFY Dark Blue Sapphire and Diamond Flower Wide Band Ring 14k White Gold

By Effy

Located in Honolulu, HI

Item Specifications: Designer: EFFY Metal: 14k White Gold Ring Weight: 11.7 grams Ring Size: 7 Ring Height: 16.5 mm tall ​ ​Diamond Count: 30 round brilliant cut ​ ​Diamond Co...

Category

21st Century and Contemporary Band Rings

Materials

Sapphire, Blue Sapphire, Diamond, 14k Gold, White Gold

EFFY 14K White Gold Oval Blue Sapphire and Diamond Halo 3-Row Ring
EFFY 14K White Gold Oval Blue Sapphire and Diamond Halo 3-Row Ring

EFFY 14K White Gold Oval Blue Sapphire and Diamond Halo 3-Row Ring

By Effy

Located in Scottsdale, AZ

Designer: EFFY Material: 14K white gold Blue Sapphire: 1 oval cut= 1.46ct Diamonds: 28 round cut= 1.26cttw Color: G-H Clarity: I1-I2 Diamonds: 8 princess cut= 0.56cttw Color: G-H Cla...

Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

Effy 14K White Gold Trillion Tanzanite and Natural Diamond Halo Cocktail Ring
Effy 14K White Gold Trillion Tanzanite and Natural Diamond Halo Cocktail Ring

Effy 14K White Gold Trillion Tanzanite and Natural Diamond Halo Cocktail Ring

By Effy

Located in Baltimore, MD

Effy 14K White Gold Trillion Tanzanite and Natural Diamond Halo Cocktail Ring Metal: 14k white gold Weight: 3.1 grams Gemstone: Trillion tanzanite 0.76 carat Diamonds: .20 CTW natura...

Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Tanzanite, White Gold

EFFY Sapphire Diamond Cluster Halo Ring - White Gold 14k Specialty Cut 1.05ctw
EFFY Sapphire Diamond Cluster Halo Ring - White Gold 14k Specialty Cut 1.05ctw

EFFY Sapphire Diamond Cluster Halo Ring - White Gold 14k Specialty Cut 1.05ctw

By Effy

Located in Greensboro, NC

Retail Price: $4100 Size: 7 1/4 Sizing Fee: Up 1 1/2 sizes for $60 or Down 1/2 a size for $40 Brand: EFFY Metal Content: 14k White Gold Stone Information Natural Sapphires Treat...

Category

21st Century and Contemporary Cluster Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

EFFY Sapphire Diamond Bypass Ring - Yellow Gold 14k Round 1.05ctw Stripe Curve
EFFY Sapphire Diamond Bypass Ring - Yellow Gold 14k Round 1.05ctw Stripe Curve

EFFY Sapphire Diamond Bypass Ring - Yellow Gold 14k Round 1.05ctw Stripe Curve

By Effy

Located in Greensboro, NC

Size: 9 1/4 Sizing Fee: Up 2 sizes for $40 or Down 3 sizes for $40 Brand: BH (early EFFY) Metal Content: 14k Yellow Gold Stone Information Natural Sapphires Treatment: Heating Ca...

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Effy 14k White Gold Alternating 5.25ctw Pink Sapphire Diamond Eternity Band Ring
Effy 14k White Gold Alternating 5.25ctw Pink Sapphire Diamond Eternity Band Ring

Effy 14k White Gold Alternating 5.25ctw Pink Sapphire Diamond Eternity Band Ring

By Effy

Located in Montclair, NJ

Ring Width: 3.8mm (0.15") Ring Height: 4.2mm rise off the finger Hallmark: EFFY Condition: Shows some light wear/ Sapphires show some abrasion.

Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Pink Sapphire, Gold, 14k Gold, White Gold

Effy D'Oro Circle Pendant with Diamonds in Textured 14 Karat Yellow Gold
Effy D'Oro Circle Pendant with Diamonds in Textured 14 Karat Yellow Gold

Effy D'Oro Circle Pendant with Diamonds in Textured 14 Karat Yellow Gold

By Effy

Located in Scottsdale, AZ

Metal: 14 Karat Yellow Gold Gemstones: Diamonds Diamond Count: 15 Diamond Cut: Round Brilliant Diamond Total Carat Weight: 0.83 carats Diamond Color: H - I Diamond Clarity SI2 - I1 ...

Category

21st Century and Contemporary Unknown Contemporary Pendant Necklaces

Materials

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

Designer EFFY Ruby and Diamond Open Key Gold Pendant Estate Fine Jewelry
Designer EFFY Ruby and Diamond Open Key Gold Pendant Estate Fine Jewelry

Designer EFFY Ruby and Diamond Open Key Gold Pendant Estate Fine Jewelry

By Effy

Located in Montreal, QC

Finely Detailed Designer EFFY Ruby encrusted Open Key Pendant, set with 2.52tcw Rubies, accented by Diamonds, approx. 0.32tcw.

Category

21st Century and Contemporary Modern Pendant Necklaces

Materials

Diamond, Ruby, Gold, 14k Gold, Rose Gold

  • 1
Get Updated with New Arrivals
Save "Effy Diamonds", and we’ll notify you when there are new listings in this category.

Effy Diamonds For Sale on 1stDibs

On 1stDibs, there are many options to choose from in our inventory of effy diamonds. These distinct designs — crafted with great care and often made from Gold, 14k Gold and White Gold — can elevate any look. Our collection of these items for sale includes 20 vintage editions and 164 modern creations to choose from as well. Our inventory has long been popular, and it includes earlier versions that date to the 20th Century and newer variations that were made as recently as the 21st Century. Our collection of effy diamonds includes designs that are universally popular, but Modern and Contemporary styles, specifically, are sought with frequency. While most can agree that any pick from our collection easily elevates most outfits, but the choice of Diamond versions from the 146 available is guaranteed to add a special touch to your ensemble. Today, if you’re looking for round cut effy diamonds and are unable to find the perfect match, our selection also includes oval cut and emerald cut alternatives. Most of our effy diamonds for sale are for women, but there are 56 pieces available to browse for men.

How Much are Effy Diamonds?

Prices for effy diamonds can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $360 and can go as high as $43,910, while effy diamonds, on average, fetch $1,860.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany & Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany & Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef & Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.