Skip to main content

Used Gia Certified Diamonds

to
1,801
9,548
432
10,334
4,410
1,475
534
366
274
222
101
91
70
55
50
42
42
39
37
33
32
30
25
24
10
5
4
4
3
3
2
2
1
1
1
1
1
742
539
398
349
259
14K White Gold GIA Certified Diamond Engagement Ring
14K White Gold GIA Certified Diamond Engagement Ring

14K White Gold GIA Certified Diamond Engagement Ring

Located in Boca Raton, FL

This exquisite 14K White Gold Engagement Ring showcases a breathtaking 2-carat Natural Round Brilliant Diamond certified by GIA (#6425856425). With an SI2 clarity and F color grade, ...

Category

21st Century and Contemporary American Used Gia Certified Diamonds

Materials

Diamond, Gold, 14k Gold, White Gold

Vintage-Style GIA Certified Diamond Sapphire Platinum Ring
Vintage-Style GIA Certified Diamond Sapphire Platinum Ring

Vintage-Style GIA Certified Diamond Sapphire Platinum Ring

Located in Chicago, IL

📌 Ring Details: 💍 Metal: Platinum (6.03 grams) 📏 Ring Size: 6.5 💎 Total Carat Weight: 1.40ct 💎 Center Diamond: ✅ Carat Weight: 0.50ct ✅ Certification: GIA Certified ✅ Color: ...

Category

2010s Unknown Art Deco Used Gia Certified Diamonds

Materials

Diamond, Sapphire, Platinum

1.02 Carat GIA Certified Diamond platinum Engagement Ring
1.02 Carat GIA Certified Diamond platinum Engagement Ring

1.02 Carat GIA Certified Diamond platinum Engagement Ring

Located in New York, NY

This amazing platinum engagement ring from the Art Deco era is centered with a sparkling GIA certified old European brilliant cut diamond that weighs 1.02ct. graded K color with VS2 ...

Category

Early 20th Century Art Deco Used Gia Certified Diamonds

Materials

Diamond, Platinum

Spectra Fine Jewelry GIA Certified Diamond Cluster Earrings
Spectra Fine Jewelry GIA Certified Diamond Cluster Earrings

Spectra Fine Jewelry GIA Certified Diamond Cluster Earrings

By Spectra Fine Jewelry

Located in New York, NY

Nine of the thirty diamonds which weigh around one carat apiece are certified by the Gemological Institute of America (GIA), stating that some are of D-E-F color, some G-H with a cla...

Category

21st Century and Contemporary American Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

2.16 Carat GIA Certified Diamond Platinum Stud Earrings
2.16 Carat GIA Certified Diamond Platinum Stud Earrings

2.16 Carat GIA Certified Diamond Platinum Stud Earrings

By Rive Gauche Jewelry

Located in New York, NY

The perfect size and quality of diamond stud earrings is presented in these luxurious perfectly matched pair, set in 4 eagle-claw platinum prongs. The prongs are shaped to securely h...

Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA-Certified Diamond & Mother of Pearl Pendant, Georgian
GIA-Certified Diamond & Mother of Pearl Pendant, Georgian

GIA-Certified Diamond & Mother of Pearl Pendant, Georgian

Located in Northampton, MA

Dating from around the 1830s, this magnificent Georgian pendant features a silver-over-gold "bow" set with 13 beautiful old rose-cut diamonds that total at least 1 carat. From this s...

Category

1820s Unknown Georgian Used Gia Certified Diamonds

Materials

Diamond, Pearl, Silver

Rare oval diamond engagement ring 3.03ct GIA certified diamond
Rare oval diamond engagement ring 3.03ct GIA certified diamond

Rare oval diamond engagement ring 3.03ct GIA certified diamond

Located in Boca Raton, FL

Huge oval engagement ring in 18KT white gold, the center diamond is a stunning 3.03 carats SI2 clarity and G color diamond certified by GIA.

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

4.02CTW GIA Certified Diamond Engagement Ring in Yellow Gold
4.02CTW GIA Certified Diamond Engagement Ring in Yellow Gold

4.02CTW GIA Certified Diamond Engagement Ring in Yellow Gold

By MJ Gabel

Located in Webster, NY

Stunning GIA Certified Earth Mined diamond engagement ring with 4.02ctw of diamonds.

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 14k Gold, Yellow Gold

Issac Nussbaum Natural Color Yellow GIA Certified Diamond Earrings
Issac Nussbaum Natural Color Yellow GIA Certified Diamond Earrings

Issac Nussbaum Natural Color Yellow GIA Certified Diamond Earrings

By Issac Nussbaum

Located in New York, NY

Natural Color Yellow Diamond Earrings GIA Certified. A stunning pair of earrings set in our exclusive handmade platinum settings.

Category

21st Century and Contemporary Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

Antique Art-Deco GIA Certified Diamond Bar Pin Brooch
Antique Art-Deco GIA Certified Diamond Bar Pin Brooch

Antique Art-Deco GIA Certified Diamond Bar Pin Brooch

Located in Beverly Hills, CA

GIA-certified Antique Art-Deco diamond bar pin brooch.

Category

Early 20th Century Unknown Art Deco Used Gia Certified Diamonds

Materials

Diamond, White Diamond, Yellow Diamond, Gold, White Gold, Yellow Gold

14K White Gold GIA Certified Diamond Halo Ring 0.97ct
14K White Gold GIA Certified Diamond Halo Ring 0.97ct

14K White Gold GIA Certified Diamond Halo Ring 0.97ct

Located in Laguna Beach, CA

Ladies 14k white gold diamond halo ring. Stamped 14k and weighs 3.2 grams. The center diamond is a round brilliant cut, .67 carats, E color, i1 clarity, Very good cut grade. The GIA ...

Category

Late 20th Century Used Gia Certified Diamonds

Materials

Diamond, 14k Gold, White Gold

4.37 Carat Briolette GIA certified Diamond, U to V color VVS2 Clarity
4.37 Carat Briolette GIA certified Diamond, U to V color VVS2 Clarity

4.37 Carat Briolette GIA certified Diamond, U to V color VVS2 Clarity

By Ajami Diamonds

Located in Ramat Gan, IL

This exceptional natural diamond features a Pear-shaped GIA certified Briolette cut, weighing an impressive 4.37 carats.

Category

2010s Used Gia Certified Diamonds

Materials

Diamond

18K White Gold GIA Certified Diamond Engagement Ring 2.61ct
18K White Gold GIA Certified Diamond Engagement Ring 2.61ct

18K White Gold GIA Certified Diamond Engagement Ring 2.61ct

Located in Laguna Beach, CA

Ladies 18k white gold and diamond engagement ring. Stamped 18k and weighs 8.2 grams. The center diamond is a 2.01 carat round brilliant cut, I color, Vs2 clarity, and excellent cut g...

Category

Late 20th Century Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

14k White Gold 0.70ct GIA Certified Diamond Engagement Ring
14k White Gold 0.70ct GIA Certified Diamond Engagement Ring

14k White Gold 0.70ct GIA Certified Diamond Engagement Ring

Located in Boca Raton, FL

This exquisite engagement ring features a dazzling 0.70-carat natural pear cut diamond, certified by GIA and selected for its radiant beauty.

Category

21st Century and Contemporary Unknown Used Gia Certified Diamonds

Materials

Diamond, 14k Gold, White Gold

14k White Gold 2.19ct GIA Certified Diamond Engagement Ring
14k White Gold 2.19ct GIA Certified Diamond Engagement Ring

14k White Gold 2.19ct GIA Certified Diamond Engagement Ring

Located in Boca Raton, FL

This exquisite engagement ring showcases a captivating 2.19-carat natural pear cut diamond, certified by GIA and selected for its remarkable presence and fire.

Category

21st Century and Contemporary Unknown Used Gia Certified Diamonds

Materials

Diamond, 14k Gold, White Gold

2.01ct GIA certified diamond studs rectangular VS clarity platinum
2.01ct GIA certified diamond studs rectangular VS clarity platinum

2.01ct GIA certified diamond studs rectangular VS clarity platinum

Located in Boca Raton, FL

One of a kind diamond studs with rectangular diamonds certified by GIA in platinum.

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

Emilio Jewelry 2.48 Carat GIA Certified Diamond Stud Earrings
Emilio Jewelry 2.48 Carat GIA Certified Diamond Stud Earrings

Emilio Jewelry 2.48 Carat GIA Certified Diamond Stud Earrings

By Emilio!

Located in New York, NY

1 GIA Certified Radiant Stone, G, VVS2, 0.5 Carat 1 GIA Certified Radiant Stone, G, VS1, 0.57 Carat 1 GIA Certified Radiant Stone, G, VVS1, 0.7 Carat 1 GIA Certified Radiant Stone, ...

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

Old European Cut GIA Certified Diamond Yellow Gold Earrings
Old European Cut GIA Certified Diamond Yellow Gold Earrings

Old European Cut GIA Certified Diamond Yellow Gold Earrings

Located in New York, NY

The diamonds are certified by the GIA - one weighing 1.50 carats with a color grade of H and clarity of VVS 2, the other weighing 1.32 carats with a color grade of G and a clarity of...

Category

1920s American Used Gia Certified Diamonds

Materials

Diamond, Yellow Gold

GIA Certified 10.31 Carat Fancy Intense Yellow GIA-Certified Diamond Ring
GIA Certified 10.31 Carat Fancy Intense Yellow GIA-Certified Diamond Ring

GIA Certified 10.31 Carat Fancy Intense Yellow GIA-Certified Diamond Ring

By Antinori Fine Jewels

Located in Chicago, IL

A masterpiece of nature and craftsmanship, this breathtaking ring centerpieces a spectacular GIA-certified 10.31 carat Cut-Cornered Rectangular Modified Brilliant cut diamond.

Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Yellow Diamond, Diamond, Platinum, 18k Gold

Stunning 16.58 Carat GIA Certified Diamond Platinum Cluster Earrings
Stunning 16.58 Carat GIA Certified Diamond Platinum Cluster Earrings

Stunning 16.58 Carat GIA Certified Diamond Platinum Cluster Earrings

Located in New York, NY

Amazing Winston style platinum diamond ear clips set with a total of 22 - 11 in each earring - marquis shape diamonds with a total weight of 16.58 carats. All diamonds are accompanie...

Category

Early 2000s American Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Filigree Victorian Solitaire Platinum Engagement Ring
GIA Certified Diamond Filigree Victorian Solitaire Platinum Engagement Ring

GIA Certified Diamond Filigree Victorian Solitaire Platinum Engagement Ring

Located in Stamford, CT

Original 1890s engraved filigree solitaire engagement ring in a platinum setting. GIA certified as oval with old world cutting and beauty.

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

Vintage 14K White Gold GIA Certified Diamond & Sapphire Ring
Vintage 14K White Gold GIA Certified Diamond & Sapphire Ring

Vintage 14K White Gold GIA Certified Diamond & Sapphire Ring

Located in Henderson, NV

Vintage starburst ring crafted in 14K white gold, featuring a central brilliant-cut diamond. The diamond is surrounded by a halo of round and marquise cut diamonds and marquise cut s...

Category

Late 20th Century American Contemporary Used Gia Certified Diamonds

Materials

Diamond, Sapphire, 14k Gold, White Gold

1.18 Carat GIA Certified Diamond Platinum Hexagon Halo Ring
1.18 Carat GIA Certified Diamond Platinum Hexagon Halo Ring

1.18 Carat GIA Certified Diamond Platinum Hexagon Halo Ring

Located in San Francisco, CA

Gorgeous platinum Art Deco style diamond ring features a center 1.18 carat I/SI1 round brilliant cut diamond. GIA report # 5172209745 accompanies the diamond. Accenting the ring ar...

Category

21st Century and Contemporary American Art Deco Used Gia Certified Diamonds

Materials

Diamond, Platinum

7.17 Carat Sapphire 2.07 GIA Certified Diamond Engagement Ring
7.17 Carat Sapphire 2.07 GIA Certified Diamond Engagement Ring

7.17 Carat Sapphire 2.07 GIA Certified Diamond Engagement Ring

Located in New York, NY

The sapphire is flanked by sparkling GIA certified trilliant cut diamonds that weigh 1.03ct and 1.04ct graded H/SI1 and G/SI1.

Category

Late 20th Century Used Gia Certified Diamonds

Materials

Blue Sapphire, Platinum

GIA certified diamond 1.01ct Fancy PInk diamond loose NATURAL COLOR
GIA certified diamond 1.01ct Fancy PInk diamond loose NATURAL COLOR

GIA certified diamond 1.01ct Fancy PInk diamond loose NATURAL COLOR

Located in Boca Raton, FL

Loose GIA diamond fancy pink, will comes with all certififcates. Natural Diamond(s): Color: Fancy Pink Cut:Oval Brilliant Carat: 1.01ct Clarity: SI2 ABOUT US We are a family-owne...

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Pink Diamond

Fancy Intense Yellow GIA certified diamond Three-Stone Ring in 18K White Gold
Fancy Intense Yellow GIA certified diamond Three-Stone Ring in 18K White Gold

Fancy Intense Yellow GIA certified diamond Three-Stone Ring in 18K White Gold

By Ajami Diamonds

Located in Ramat Gan, IL

All stones are GIA certified. The diamonds are set in 18K White Gold with 12 small diamonds to highlight the intense color.

Category

2010s Asian Contemporary Used Gia Certified Diamonds

Materials

Diamond, Yellow Diamond, 18k Gold

Harry Winston Cluster 43 carats GIA Certified Diamond Cluster Earrings
Harry Winston Cluster 43 carats GIA Certified Diamond Cluster Earrings

Harry Winston Cluster 43 carats GIA Certified Diamond Cluster Earrings

By Harry Winston

Located in New York, NY

Harry Winston Diamond Cluster Earrings This pair of earrings has marquise brilliant-cut diamonds of 3.35 and 3.02 carats, and pear brilliant-cut diamonds ranging from 3.42 to 2.42 ...

Category

21st Century and Contemporary Artist Used Gia Certified Diamonds

Materials

Diamond, Platinum

Original Art Deco GIA Certified Diamond Ring Crafted in Platinum
Original Art Deco GIA Certified Diamond Ring Crafted in Platinum

Original Art Deco GIA Certified Diamond Ring Crafted in Platinum

Located in Webster, NY

Original Art Deco GIA certified 3.95CTW Earth Mined Diamond Ring crafted in Platinum.

Category

20th Century Art Deco Used Gia Certified Diamonds

Materials

Diamond, Platinum

0.86 ct GIA Certified Diamond Ring in 14k White Gold
0.86 ct GIA Certified Diamond Ring in 14k White Gold

0.86 ct GIA Certified Diamond Ring in 14k White Gold

By Hakimi's Gem

Located in Chicago, IL

This ring exemplifies superior craftsmanship. - Center Stone: GIA-certified natural 0.86 ct round diamond - Diamond Quality: D color, SI1 clarity - Secondary Stones: 0.20 ct round...

Category

21st Century and Contemporary Modern Used Gia Certified Diamonds

Materials

Diamond, Gold, 14k Gold, White Gold

Fancy Colored Oval Pink, Yellow & Gray GIA Certified Diamond Ring
Fancy Colored Oval Pink, Yellow & Gray GIA Certified Diamond Ring

Fancy Colored Oval Pink, Yellow & Gray GIA Certified Diamond Ring

By Cellini

Located in New York, NY

Natural fancy light yellow, faint pink and vivid gray oval diamonds are surrounded by fancy round yellow, pink and gray diamonds. Set in a platinum and 18-karat yellow and rose gold....

Category

Early 2000s Contemporary Used Gia Certified Diamonds

Materials

Diamond, Yellow Diamond, Pink Diamond, Gold, Rose Gold, Yellow Gold, Pla...

Platinum 1.5 Carat Round GIA Certified Diamond Halo Engagement Ring
Platinum 1.5 Carat Round GIA Certified Diamond Halo Engagement Ring

Platinum 1.5 Carat Round GIA Certified Diamond Halo Engagement Ring

By Rose and Choc

Located in Wallingford, CT

Metal: Platinum Diamond: 1.5 carat round GIA diamond Color and Clarity: I, VS2 Cut: Excellent Certification: GIA Dimension: Approx 10mm; 7mm round center stone. Side Stone: N...

Category

2010s American Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond and Emerald Double Target Ring in Platinum
GIA Certified Diamond and Emerald Double Target Ring in Platinum

GIA Certified Diamond and Emerald Double Target Ring in Platinum

By Susannah Lovis

Located in London, England

A beautiful GIA certified Art Deco style emerald and diamond double target ring set in platinum.

Category

2010s Used Gia Certified Diamonds

Materials

Diamond, Emerald, Platinum

Art Deco GIA Certified Diamond and Blue Sapphire Engagement Ring
Art Deco GIA Certified Diamond and Blue Sapphire Engagement Ring

Art Deco GIA Certified Diamond and Blue Sapphire Engagement Ring

Located in Denver, CO

A circular brilliant-cut diamond, certified by the Gemological Institute of America (GIA), measuring 1.08 carats, J color VS1 clarity, sparkles in the center of this Art Deco gem, fl...

Category

Mid-20th Century American Art Deco Used Gia Certified Diamonds

Materials

Diamond, Blue Sapphire, Platinum

GIA Certified Diamond Ruby Cocktail Ring in 18k Gold, 1970s
GIA Certified Diamond Ruby Cocktail Ring in 18k Gold, 1970s

GIA Certified Diamond Ruby Cocktail Ring in 18k Gold, 1970s

Located in Stamford, CT

Certified by the GIA. 1 Ideal cut round diamond, approx. total weight .12ct, F, VS 20 full cut diamonds, approx. total weight .50cts, F, VS 12 fine bright red custom cut baguette R...

Category

Late 20th Century Used Gia Certified Diamonds

Materials

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

Diana M. GIA Certified Diamond Halo Earrings 6.47cts , FLY , VVS2
Diana M. GIA Certified Diamond Halo Earrings 6.47cts , FLY , VVS2

Diana M. GIA Certified Diamond Halo Earrings 6.47cts , FLY , VVS2

By Diana M. Jewels

Located in New York, NY

18KT TWO TONE GOLD FANCY LIGHT YELLOW DIAMOND EARRING SET IN A HALO SETTING, FEATURES GIA CERTIFIED YELLOW DIAMONDS, 3.21CT VVS2 AND 3.26ct VVS2OF FANCY LIGHT YELLOW CUSHION CUT DIAM...

Category

21st Century and Contemporary American Modern Used Gia Certified Diamonds

Materials

Diamond

GIA Certified Diamond Engagement Ring 4.10 cts Set  in Platinum
GIA Certified Diamond Engagement Ring 4.10 cts Set  in Platinum

GIA Certified Diamond Engagement Ring 4.10 cts Set in Platinum

Located in Los Gatos, CA

This exquisite engagement set features a GIA certified Round Brilliant Cut Diamond weighing 4.10 ct, accompanied by 14 Round Brilliant Cut Diamonds with a total weight of 0.47 ct.

Category

20th Century American Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Stud Earrings 4.03 Carats G I1 18 Karat White Gold
GIA Certified Diamond Stud Earrings 4.03 Carats G I1 18 Karat White Gold

GIA Certified Diamond Stud Earrings 4.03 Carats G I1 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

Diamond stud earrings weighing 4.03 Carats, Color G Clarity I1, in 14 Karat White Gold 4 prong Champagne setting. Comments: FULL of LIFE, Eye Clean, Very Nice Pair Setting can be ch...

Category

2010s Contemporary Used Gia Certified Diamonds

Materials

Diamond, White Gold

GIA Certified Diamond Stud Earrings 2.01 Carats F SI2 18 Karat White Gold
GIA Certified Diamond Stud Earrings 2.01 Carats F SI2 18 Karat White Gold

GIA Certified Diamond Stud Earrings 2.01 Carats F SI2 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

Diamond stud earrings weighing 2.01 Carats, in 18 Karat White Gold 4 Prong Champagne Setting. Color F Clarity SI2 Diamond Grade by our in house Gemologist Setting can be changed to...

Category

2010s Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

Vintage 6.03ct GIA Certified Diamond Three Stone Ring in Platinum
Vintage 6.03ct GIA Certified Diamond Three Stone Ring in Platinum

Vintage 6.03ct GIA Certified Diamond Three Stone Ring in Platinum

Located in London, England

A breathtaking vintage 6.03ct diamond three-stone ring set in platinum. The piece centrally features a magnificent round brilliant-cut diamond. The diamond is six-claw set to centre...

Category

2010s Used Gia Certified Diamonds

Materials

Diamond, Platinum

3.51 Carat Radiant Fancy Brownish Yellow GIA Certified Diamond Ring
3.51 Carat Radiant Fancy Brownish Yellow GIA Certified Diamond Ring

3.51 Carat Radiant Fancy Brownish Yellow GIA Certified Diamond Ring

Located in Houston, TX

This unique and stunning ring is beautifully crafted in 18K yellow gold and platinum, featuring a GIA-certified 3.51-carat radiant-cut center diamond with a captivating Fancy Brownis...

Category

2010s Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Ferrucci 1.40 Carat GIA Certified Diamond Platinum solitaire engagement ring
Ferrucci 1.40 Carat GIA Certified Diamond Platinum solitaire engagement ring

Ferrucci 1.40 Carat GIA Certified Diamond Platinum solitaire engagement ring

By FERRUCCI

Located in New York, NY

Entirely made in New York City by Italian master jeweler showcasing a stunning GIA Certified round brilliant cut diamond 1.41 carat, F color and VVS2 clarity, stunning and superior ...

Category

2010s American Used Gia Certified Diamonds

Materials

White Diamond, Platinum

Art Deco 1.56 Carat GIA Certified Diamond Platinum Engagement Ring
Art Deco 1.56 Carat GIA Certified Diamond Platinum Engagement Ring

Art Deco 1.56 Carat GIA Certified Diamond Platinum Engagement Ring

Located in New York, NY

This stunning platinum engagement ring from the Art Deco era, is centered with a sparkling GIA certified old European cut diamond that weighs 1.56ct. graded I color with SI1 clarity.

Category

Early 20th Century Art Deco Used Gia Certified Diamonds

Materials

Diamond, Platinum

Vintage-Style GIA Certified Diamond Emerald 14K White Gold Ring
Vintage-Style GIA Certified Diamond Emerald 14K White Gold Ring

Vintage-Style GIA Certified Diamond Emerald 14K White Gold Ring

Located in Chicago, IL

📌 Ring Details: 💍 Metal: 14K White Gold (3.38 grams) 📏 Ring Size: 6.5 💎 Total Carat Weight: 1.15ct 💎 Center Diamond: ✅ Carat Weight: 0.50ct ✅ Certification: GIA Certified ✅ C...

Category

2010s Unknown Art Deco Used Gia Certified Diamonds

Materials

Diamond, Emerald, 14k Gold, White Gold

Art Deco 1.95 Carat GIA Certified Diamond platinum Engagement Ring
Art Deco 1.95 Carat GIA Certified Diamond platinum Engagement Ring

Art Deco 1.95 Carat GIA Certified Diamond platinum Engagement Ring

Located in New York, NY

This beautiful platinum ring from the Art Deco era, is centered with a sparkling GIA certified old European cut diamond that weighs 1.95ct. graded J color with SI1 clarity.

Category

Early 20th Century Art Deco Used Gia Certified Diamonds

Materials

Diamond, Sapphire, Platinum

2.00 Carat Total I VS2 GIA Certified Diamond Stud Earrings in 14K White gold
2.00 Carat Total I VS2 GIA Certified Diamond Stud Earrings in 14K White gold

2.00 Carat Total I VS2 GIA Certified Diamond Stud Earrings in 14K White gold

By Ajami Diamonds

Located in Ramat Gan, IL

This classic pair of round brilliant diamond stud earrings features two perfectly matched 1.00 carat natural diamonds, totaling 2.00 carats, each independently certified by the GIA.

Category

2010s Israeli Used Gia Certified Diamonds

Materials

Diamond, 14k Gold

4.04CTW GIA Certified Diamond Ring Crafted with Round Brilliant Cut Diamonds
4.04CTW GIA Certified Diamond Ring Crafted with Round Brilliant Cut Diamonds

4.04CTW GIA Certified Diamond Ring Crafted with Round Brilliant Cut Diamonds

Located in Webster, NY

Jaw dropping 4.04CTW Certified Round Brilliant Cut Diamond ring crafted in classic 14k White Gold.

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 14k Gold, White Gold

Huge Oval Diamond engagement ring 3.01ct GIA certified diamond ring 18KT
Huge Oval Diamond engagement ring 3.01ct GIA certified diamond ring 18KT

Huge Oval Diamond engagement ring 3.01ct GIA certified diamond ring 18KT

Located in Boca Raton, FL

Huge Oval diamond engagement ring with unreal sparkle! GIA certified center diamond!

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

GIA Certified Diamond Swirl Cocktail Ring with 1.30 Carat Round Diamond
GIA Certified Diamond Swirl Cocktail Ring with 1.30 Carat Round Diamond

GIA Certified Diamond Swirl Cocktail Ring with 1.30 Carat Round Diamond

By M&V Vanguard Jewelry

Located in New York, NY

Dazzling and elegant , Mounted in 14K Rose Gold , this ring features exceptional french pave work. Encrusted all over, creating a beautiful swirl that hugs Round Diamond center stone...

Category

2010s American Modern Used Gia Certified Diamonds

Materials

Diamond, 14k Gold, Rose Gold

GIA Certified Diamond Stud Earrings 3.04 Carats H-I I1 18 Karat White Gold
GIA Certified Diamond Stud Earrings 3.04 Carats H-I I1 18 Karat White Gold

GIA Certified Diamond Stud Earrings 3.04 Carats H-I I1 18 Karat White Gold

By Harbor Diamonds

Located in New York, NY

Diamond stud earrings weighing 3.04 Carats, Color H-I, Clarity I1, in 18 Karat White Gold 3 prong Champagne setting. FULL of Life, 100% Eye Clean, Great Pair to own Setting can be c...

Category

2010s Contemporary Used Gia Certified Diamonds

Materials

Diamond, White Gold, 18k Gold

Cartier C de Cartier 18K WG GIA Certified Diamond Solitaire Necklace
Cartier C de Cartier 18K WG GIA Certified Diamond Solitaire Necklace

Cartier C de Cartier 18K WG GIA Certified Diamond Solitaire Necklace

By Cartier

Located in New York, NY

A timeless expression of Cartier’s celebrated elegance, this authentic C de Cartier solitaire necklace embodies the Maison’s refined aesthetic through exceptional craftsmanship and u...

Category

21st Century and Contemporary French Modern Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

Art Deco Roulette Wheel GIA Certified Diamond Emerald & Onyx Engagement Ring
Art Deco Roulette Wheel GIA Certified Diamond Emerald & Onyx Engagement Ring

Art Deco Roulette Wheel GIA Certified Diamond Emerald & Onyx Engagement Ring

By Belrose Estate Jewelers

Located in Santa Barbara, CA

The Monte Carlo Art Deco roulette wheel engagement ring centers on a 1.50 carat diamond GIA certified as D color, the highest grade attainable.

Category

2010s Art Deco Used Gia Certified Diamonds

Materials

Diamond, Emerald, Onyx, Platinum

8.02-carat GIA Certified Diamond Ring 18k White Gold Modern Jewelry
8.02-carat GIA Certified Diamond Ring 18k White Gold Modern Jewelry

8.02-carat GIA Certified Diamond Ring 18k White Gold Modern Jewelry

Located in Beverly Hills, CA

A modern 18k white gold diamond ring with GIA certified cut-cornered rectangular modified brilliant cut diamond.

Category

21st Century and Contemporary Unknown Used Gia Certified Diamonds

Materials

Diamond, White Gold, 18k Gold

Diana M. 18Kt White Gold 14.66 Carats GIA Certified Diamond Ring
Diana M. 18Kt White Gold 14.66 Carats GIA Certified Diamond Ring

Diana M. 18Kt White Gold 14.66 Carats GIA Certified Diamond Ring

By Diana M. Jewels

Located in New York, NY

18K White Gold Diamond Exquisite Diamond Ring, features 4.56 Carat in the center J Color SI2 in Clarity GIA Certified set with 10.10 Carats of diamonds around.

Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

Charming 0.70 Carat GIA Certified Diamond Sapphire Platinum Halo Engagement Ring
Charming 0.70 Carat GIA Certified Diamond Sapphire Platinum Halo Engagement Ring

Charming 0.70 Carat GIA Certified Diamond Sapphire Platinum Halo Engagement Ring

Located in New York, NY

Made of platinum, this ring is centered with a sparkling GIA certified round brilliant cut diamond that weighs 0.70ct. graded H color with VS1 clarity.

Category

Late 20th Century Art Deco Used Gia Certified Diamonds

Materials

Diamond, Sapphire, Platinum

Enticing .64 Carat GIA Certified Diamond Emerald Onyx Platinum Engagement Ring
Enticing .64 Carat GIA Certified Diamond Emerald Onyx Platinum Engagement Ring

Enticing .64 Carat GIA Certified Diamond Emerald Onyx Platinum Engagement Ring

Located in New York, NY

Made of platinum, this ring is centered with a sparkling GIA certified old European brilliant cut diamond that weighs 0.64ct. graded J color with VS2 clarity.

Category

20th Century Art Deco Used Gia Certified Diamonds

Materials

Diamond, Emerald, Onyx, Platinum

Peter Suchy 1.00 Carat GIA certified Diamond Sapphire Platinum Engagement Ring
Peter Suchy 1.00 Carat GIA certified Diamond Sapphire Platinum Engagement Ring

Peter Suchy 1.00 Carat GIA certified Diamond Sapphire Platinum Engagement Ring

By Peter Suchy

Located in Stamford, CT

8 sided top with a beautiful GIA certified sparkly fine white Ideal cut diamond engagement ring.

Category

2010s Unknown Used Gia Certified Diamonds

Materials

Diamond, Sapphire, Platinum

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

Used Gia Certified Diamonds For Sale on 1stDibs

On 1stDibs, there are many options to choose from in our inventory of used gia certified diamonds. These distinct designs — crafted with great care and often made from Gold, Platinum and 18k Gold — can elevate any look. Find a collection of 2461 vintage versions or 9444 modern creations for a more contemporary example of these cherished accessories. Our inventory is broad and distinctive, with accessories on offer that were made as long ago as the 18th Century to those produced as recently as the 21st Century. The designs in our inventory of used gia certified diamonds bearing Modern or Contemporary hallmarks are very popular. Antinori Fine Jewels, Roman Malakov and Peter Suchy each produced beautiful examples of these items that are worth considering. Today, if you’re looking for round cut used gia certified diamonds and are unable to find the perfect match, our selection also includes oval cut and cushion cut alternatives. There aren’t many items for men in our collection of used gia certified diamonds, as most of the options available are for women.

How Much are Used Gia Certified Diamonds?

On average, used gia certified diamonds at 1stDibs sell for $22,343, while they’re typically $1 on the low end and $475,940,000 for the highest priced versions of this item.

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.