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Used Gia Certified Diamonds

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GIA Certified Diamond Cross
Located in New York, NY
GIA Certified Diamond and Platinum Cross.This diamond cross has 17 emerald cut diamonds weight
Category

21st Century and Contemporary American Artist Used Gia Certified Diamonds

Materials

Diamond, Platinum

Used GIA Certified Diamond Cross
GIA Certified Diamond Cross
H 1.93 in W 1.34 in
Platinum GIA Certified Diamond Ring
Located in Flushing, NY
Platinum GIA Certified Diamond Ring GIA Report No .......... 12262701 Shape ........... Round
Category

20th Century Used Gia Certified Diamonds

Materials

Diamond, Platinum

Spectacular 24.32 Carat GIA Certified Diamond Earrings
By Diana M. Jewels
Located in New York, NY
Spectacular 24.32 Carats, all GIA Certified Diamond Earrings. These magnificent diamond
Category

21st Century and Contemporary American Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

Exclusive GIA Certified Diamond on Crown Ring
Located in Massafra, IT
Amazing crown design on ring with GIA certified diamond oval cut ct 0,40 D/VS2 and around diamonds
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

GIA Certified Diamond Earring with Emerald Cut Diamonds
By M&V Vanguard Jewelry
Located in New York, NY
GIA Certified Diamond Earring with Emerald Cut Diamonds in PT950 Center stones: Emerald Cut 0.70CT
Category

2010s American Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Chandelier Earrings
Located in Bal Harbour, FL
Spectacular platinum diamond chandelier earrings with the finest GIA certified diamonds. Entirely
Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond 18K Gold Pendant
Located in Massafra, IT
centre GIA Certified diamond of 0,40 carat, D color , VS2 clarity, and 171 pieces of natural diamonds of
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

18k Gold

Nally GIA Certified, Diamond and Platinum Cross
Located in New York, NY
GIA certified .Diamond and Platinum Cross Pendant This cross has 12 emerald cut diamonds weight a
Category

21st Century and Contemporary American Artist Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Tennis Necklace
By Issac Nussbaum
Located in New York, NY
GIA CERTIFIED Diamond tennis Necklace And incredible sophisticated take on the classic diamond
Category

2010s North American Modern Used Gia Certified Diamonds

Materials

Diamond

Arabesque 18kw Gold and GIA Certified Diamond Bangle
By Thomas Kurilla
Located in New York, NY
Arabesque 18kw Gold and GIA Certified Diamond Bangle, "Gabriella." Inspired from a collection of
Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, Gold

GIA Certified Diamond Flower Dress Ring
Located in COTTESLOE, AU
Bloom into elegance with this GIA certified diamond dress ring from bo•be jewellery. At its heart
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond

GIA Certified Diamonds 18k Gold Art Deco Earrings
Located in Massafra, IT
Art Decô style for this beautiful earrings in 18k gold with two pieces of GIA certified diamonds
Category

21st Century and Contemporary Art Deco Used Gia Certified Diamonds

Materials

18k Gold

GIA Certified Diamond of 1.51 Carats If Clarity
Located in Massafra, IT
An exclusive GIA certified diamond of 1,51 carats, heart cut, G color, IF clarity. Excellent polish
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond

4.02 ct GIA Certified Natural Ruby & GIA Certified Diamond Ring
By Hakimi's Gem
Located in Chicago, IL
This stunning ring features a GIA certified natural ruby and GIA certified diamond ring set in
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, Ruby, Platinum

GIA Certified Diamond Engagement Ring with 1.01cts Rectangular Diamond
Located in Surfside, FL
GIA certified diamond engagement ring with 1.01cts rectangular diamond F color SI2 clarity and appr
Category

20th Century Used Gia Certified Diamonds

Materials

White Gold

Natural Fancy Pink Color GIA Certified Diamond Bracelet
Located in New York, NY
each pink GIA certified diamonds as 0.27carat, 0.312carat, 0.32carat, 0.35carat, 0.32carat
Category

Late 20th Century Unknown Artist Used Gia Certified Diamonds

Materials

Diamond, Pink Diamond, Rose Gold, Platinum

15.53 Carat Emerald Cut GIA Certified Diamond Eternity Ring
Located in New York, NY
15.53 Carat Emerald Cut GIA Certified Diamond Eternity Ring. GIA certified Emerald-cut diamond
Category

21st Century and Contemporary American Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

NALLY Intense Fancy Yellow Color GIA Certified Diamond Ring
Located in New York, NY
Nally Jewels Intense Fancy Yellow GIA certified Diamond Ring Diamond, Gold and Platinum Mounting
Category

21st Century and Contemporary American Artist Used Gia Certified Diamonds

Materials

Diamond, Platinum

Exquisite 7.00 Carat GIA-Certified Diamond Eternity Band in Platinum Ring
Located in Chicago, IL
Exquisite 7.00 Carat GIA-Certified Diamond Eternity Band in Platinum A breathtaking symbol of
Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Stud Earrings 2.01 Carats J SI1 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
GIA Certified Diamond stud earrings weighing 2.01 Carats, in 18 Karat White Gold 4 Prong Basket
Category

2010s Contemporary Used Gia Certified Diamonds

Materials

Diamond, White Gold

18 Karat Yellow Gold Arabesque and GIA Certified Diamond Bangle
By Thomas Kurilla
Located in New York, NY
18 Karat Yellow Gold Arabesque and GIA Certified Diamond Bangle, "Gabriella." Inspired from a
Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, Yellow Gold

GIA Certified Diamond Stud Earrings 2.02 Carats G-H SI2 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
GIA Certified Diamond Stud earrings weighing 2.02 Carats, Color G-H, Clarity SI2, in a 18 Karat
Category

2010s Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

GIA Certified Diamond Stud Earrings 2.41 Carat H SI1-SI2 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
GIA Certified diamond stud earrings weighing 2.41 carats in a 3 prong martini setting, 18k white
Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond, White Gold, 18k Gold

GIA Certified Diamond Stud Earrings 2.10 Carats G-H SI1-2 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
GIA Certified Diamond stud earrings weighing 2.10 Carats, Color G-H, Clarity SI1-SI2, in 18 Karat
Category

2010s Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

Yellow diamond engagement ring 1ct GIA certified diamond
Located in Boca Raton, FL
Clarity: I1 GIA certified diamond Natural Diamond(s): Color: F-G Cut:Pear Brilliant, Round Brilliant
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, Yellow Diamond, 18k Gold

Vintage 3.02ct GIA Certified Diamond Ring in Platinum
Located in London, GB
An elegant vintage GIA-certified diamond ring set in platinum. The piece predominately features a
Category

20th Century Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Ring
Located in บางรัก, TH
18kt white gold ring with diamonds Gold colour & karat: White gold 18kt Weight: 6.15 grams
Category

2010s Asian Used Gia Certified Diamonds

Materials

Diamond, White Gold, 18k Gold

GIA Certified Diamond Round Brilliant Cut 1.06 Carat Ring Set in 18k Yellow Gold
Located in Surfside, FL
GIA certified diamond round brilliant cut 1.06 carat (F color, VS1 clarity, Excellent cut
Category

21st Century and Contemporary Unknown Modern Used Gia Certified Diamonds

Materials

Diamond, Yellow Gold

AIG Certified 4.70 Ct Orange Sapphire GIA Certified Diamonds 18K Gold Ring
Located in Massafra, IT
, and 2 side GIA Certified Diamonds of 0,30 x2=0,60 in total, D color VS clarity , very sparkly
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, Sapphire, 18k Gold

GIT Certified South Sea Pearls GIA certified Diamond 18K Gold Pendant/Brooch
Located in Massafra, IT
fine quality, and a centre GIA certified diamond in pear cut of 1 carat, K color VS clarity, and round
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, South Sea Pearl, 18k Gold

GIT Certified South Sea Pearls GIA certified Diamond 18K Gold Pendant/Brooch
Located in Massafra, IT
fine quality, and a centre GIA certified diamond in pear cut of 1 carat, K color VS clarity, and round
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, South Sea Pearl, 18k Gold

GIA Certified Diamond Riviere Necklace 17 Carats G-H SI1-2 18 Karat White Gold
By Harbor Diamonds
Located in New York, NY
GIA Certified Diamond Riviere necklace featuring 109 Round Brilliants weighing 17 Carats, in a 3
Category

2010s Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

1.5ct GIA Certified Diamond Wedding Band – 5-Stone Ring in 14K Yellow Gold
Located in Chicago, IL
elegance. Featuring 1.56 carats of GIA-certified diamonds, each stone is expertly cut for maximum
Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond, 14k Gold, Yellow Gold

Vivid Diamonds GIA Certified Diamond Dangle Earring
By Vivid Diamonds
Located in Miami, FL
a spectacular collection of GIA certified pear shape diamonds and marquise cut diamonds weighing
Category

21st Century and Contemporary American Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA certified diamond platinum ring
Located in Surfside, FL
GIA certified round brilliant cut diamond 1.14 carat (H color, I1 clarity, Excellent cut, Excellent
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Cluster Earrings
Located in New York, NY
& 4 Marquise D color VS1 clarity weighting 1.61cts. All GIA certified weighing total of 4.02cts
Category

21st Century and Contemporary American Modern Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Cluster Ring
By GEMME
Located in New York, NY
Marquise Diamond weighing 1.20 Carats with GIA certificate stating the diamond is of F color and
Category

2010s American Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Surrounded by a Glittering Double Diamond Halo
By Antinori Fine Jewels
Located in Chicago, IL
1.00 carat GIA certified diamond surrounded by a glittering double diamond halo. Measuring an eye
Category

2010s Italian Modern Used Gia Certified Diamonds

Materials

White Diamond, Diamond, White Gold, 14k Gold

GIA certified diamond platinum ring
Located in Surfside, FL
GIA certified round brilliant cut 2.19 carat diamond (H color, SI1 clarity) ring set in platinum
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Platinum

GIA certified diamond Platinum ring
Located in Surfside, FL
GIA certified round brilliant cut 1.01 carat diamond (E color, VVS2 clarity) set in double rows X
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Platinum

GIA Certified Diamond Vintage filigree ring
Located in Chicago, IL
with a beautiful old European cut - GIA Certified - Bright white and completely eye clean with grades
Category

1950s Italian Modern Used Gia Certified Diamonds

Materials

Diamond, White Diamond, Platinum

GIA Certified Diamond Platinum Pendant Necklace
By Spectra Fine Jewelry
Located in New York, NY
of 67 graduated round-cut diamonds, mounted in platinum. 16 diamonds are GIA certified weighing from
Category

21st Century and Contemporary American Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamonds 18K Gold Earrings
Located in Massafra, IT
elegant, a very romantic and glamour style. Earrings come in 18K gold 2 pieces of GIA Certified central
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

Platinum GIA Certified Diamond Engagement Ring
By Thomas Kurilla
Located in New York, NY
. Size 7. 1.13 ct wt. Gia G,SI1 This ring can be sized. Think of this as an alternative diamond
Category

2010s American Contemporary Used Gia Certified Diamonds

Materials

Diamond

Ritani GIA Certified Diamond Engagement Ring
By Ritani
Located in New York, NY
Made of platinum, this ring centers a sparkling GIA certified round brilliant cut diamond that
Category

21st Century and Contemporary Contemporary Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Platinum Galaxy Earrings
By William Goldberg
Located in San Francisco, CA
Fantastic platinum galaxy earrings, each centering around an oval-shaped diamond (GIA 1.00-carat I
Category

21st Century and Contemporary American Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond Emerald Ring Vintage Style 14K White Gold Octagonal Halo
Located in Chicago, IL
Carat Weight: 1.00ct ✅ Certification: GIA Certified ✅ Color: J (bright white face-up) ✅ Clarity: SI2
Category

2010s Unknown Art Deco Used Gia Certified Diamonds

Materials

Diamond, Emerald, 14k Gold, White Gold

GIA Certified Diamonds 18K Gold Ring
Located in Massafra, IT
heart cut diamond ct 0,30 D/VS2 , a diamond ct 0,31 D/VS2, around brilliant cut yellow color ct 0,20
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

18k Gold

GIA certified diamond 18k White Gold ring
Located in Surfside, FL
GIA certified round brilliant cut 2 carat diamond (I color, VS2 clarity) ring set in Aiden & Co
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

GIA Certified Diamond Stud Earrings 0.60ct each
By M&V Vanguard Jewelry
Located in New York, NY
is 0.60ct and GIA certified: 0.60ct G VS1 Round Brilliant GIA#2215436287 0.60ct G VS1 Round Brilliant
Category

2010s American Used Gia Certified Diamonds

Materials

Diamond, Platinum

GIA Certified Diamond 18k Gold Fashion Ring
Located in Massafra, IT
gold with a GIA Certified Natural Diamond of 0,80 carat, J color VS2 clarity, and 92 pieces of
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

Emilio Jewelry GIA Certified Diamond Shield Earring
By Emilio!
Located in New York, NY
: Gia natural certified two shield diamonds super rare to find such sizes, and make a matched pair! Just
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond

Platinum GIA Certified Diamond Vintage Engagement Ring
Located in Boca Raton, FL
Diamond Weight: 1.09ct Center Diamond Color: J Center Diamond Clarity: VS1 Certification: GIA #2235247070
Category

20th Century American Used Gia Certified Diamonds

Materials

Diamond, Platinum

Emilio Jewelry GIA Certified Diamond Cluster Earrings
By Emilio!
Located in New York, NY
striking classy cluster earrings. Each and every diamond is Gia certified. The sizes of the diamonds are
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

4.04 Carat GIA Certified Diamond Stud Earrings
Located in New York, NY
This pair of studs feature two GIA certified G VS2 round brilliant diamonds each weighing 2.01 and
Category

21st Century and Contemporary American Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, White Gold

Emilio Jewelry GIA Certified Diamond Cluster Earrings
By Emilio!
Located in New York, NY
carats Each and every diamond is Gia Certified .50ct each colors g Vvs2-vs2. Please inquire for
Category

21st Century and Contemporary Used Gia Certified Diamonds

Materials

Diamond, 18k Gold

1.02 Carat GIA Certified Diamond Platinum Ring
By Sebastien Barier
Located in San Francisco, CA
Sebastien Barier Custom Platinum ring featuring a 1.02ct (I Color, SI2 Clarity) Round Cut Diamond
Category

21st Century and Contemporary French Edwardian Used Gia Certified Diamonds

Materials

Diamond, Platinum

1.05 Carat GIA Certified Diamond Platinum Ring
By Sebastien Barier
Located in San Francisco, CA
Custom Made Sebastien Barier Platinum Ring Designed in France. The GIA graded F color SI1 clarity
Category

21st Century and Contemporary French Edwardian Used Gia Certified Diamonds

Materials

Diamond, Platinum

3.01 Carat GIA Certified Diamond Platinum Ring
Located in New York, NY
This ring from the 1920s, centers a sparkling GIA certified round brilliant cut diamond that weighs
Category

Early 20th Century Art Deco Used Gia Certified Diamonds

Materials

Diamond, Platinum

Antique Victorian GIA Certified Diamond Solitaire Ring
Located in Denver, CO
This shimmering GIA certified Old European cut diamond center stone measuring 1.01 carats, L color
Category

Early 20th Century Unknown Late Victorian Used Gia Certified Diamonds

Materials

Diamond, 18k Gold, Yellow Gold

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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.  

Questions About Used Gia Certified Diamonds
  • 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.