Skip to main content

1 Carat

Price
Item Location
Sort By
3 Carat Round Brilliant Cut 18 Carat White Gold Tennis
By Antinori Fine Jewels
Located in Rome, IT
3 Carats natural diamond tennis bracelet made in Italy 18 carat white gold.
Category

2010s Modern Tennis Bracelets

16.60 Carat Carat Riviera Diamond Tennis Necklace
By Antinori Fine Jewels
Located in Rome, IT
Riviera Neck. 16.60 carats long 16.3 inches approximately
Category

2010s Modern Chain Necklaces

Materials

Diamond, White Diamond, 14k Gold

15 Carat Sapphire Diamond Ring, Emerald Cut Sapphire 13 Carat W 2 Carat Diamonds
By Five Star Jewelry
Located in Austin, TX
Striking Diamond & Sapphire Ring! This stunning ring is a gorgeous statement piece! Made with genuine natural diamonds and a genuine, blue sapphire gemstone. The center is a deep blu...
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

2 Carat Diamond Studs
By Lyles Degrazier
Located in Dallas, TX
A classic pair of 2.00 carat diamond studs earrings, an essential staple in any women’s jewelry collection. The impressive diamond studs are hand set in 18K white gold. The contempor...
Category

21st Century and Contemporary Modern Stud Earrings

Materials

Diamond, 18k Gold

5 Carat Tennis Bracelet
By Antinori Fine Jewels
Located in Rome, IT
This brilliantly sparkling tennis bracelet has a classic design that will never go out of style! Featuring 5 carats of bright white, eye clean diamonds, this beauty offers brilliant,...
Category

2010s Modern Chain Bracelets

Materials

Diamond, White Diamond, 14k Gold

Men 1 Carat Wedding Band Solid 14 Carats White Gold
By Antinori Fine Jewels
Located in Rome, IT
Men 1 Carat Wedding Band Solid 14 Carats White Gold diamonds are excellent quality VS in clarity G color wedding band is size 10 and resizable
Category

2010s Modern Band Rings

Materials

14k Gold, White Gold

18 Carat Handcrafted Feather Earrings with 3 Carat of Diamonds
Located in Houston, TX
Created using 500 hand set stones, these amazing dangle earrings are produced in the United States by a master European certified goldsmith. Created by noted jewelry designer Davi...
Category

2010s Artisan Drop Earrings

Materials

Diamond, 18k Gold

Cartier Pave 3.5 Carat 18 Carats White Gold Ring
By Cartier
Located in Rome, IT
Cartier Pave 3.5 Carat 18 Carats White Gold Ring
Category

2010s Modern Cocktail Rings

Materials

18k Gold, White Gold

Colombian Emerald 13 Carat Set in 18 Carat White Gold
By Antinori Fine Jewels
Located in Rome, IT
An exceptional colombian emerald ring. The main stone is an outstanding 13 carats green emerald from Colombia. Check the video so you can see the performance of the main stone, 100% ...
Category

2010s Modern Engagement Rings

Materials

Emerald

Rare 3 Carat D IF Pear GIA#2203210541 Certified Natural Diamond '4 Carat Spread'
Located in New York, NY
Rare 3 Carat D IF Pear GIA#2203210541 Certified Natural Diamond (4 carat Spread) Custom Designed to Your Specifications
Category

2010s Engagement Rings

Materials

Diamond

1 Carat Marquise Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
Gorgeous engagement ring features a bright white and eye clean 1 carat marquise cut diamond surrounded by a glittering diamond halo. Measuring 13mm across, the ring has fantastic cov...
Category

2010s Modern Engagement Rings

Materials

Diamond, White Diamond

21.12 Carat Aquamarine and 5.86 Carat Diamond Earrings
Located in Jesmond, Newcastle Upon Tyne
A stunning pair of 21.12 Carat aquamarine, 5.86 Carat diamond and 18k white gold clip on earrings; part of our diverse jewelry collections Video: A video of this fine piece is avail...
Category

Vintage 1980s Clip-on Earrings

Materials

Aquamarine, Diamond, 18k Gold

1/3 Carat Diamond Anchor Pendant
Located in Towson, MD
14kt yellow gold approximately .33 carats H-I/SI2-I1 Diamond Anchor Pendant. The anchor measures just under 1 inch high and .50inch at the widest point.
Category

2010s Pendant Necklaces

Materials

Diamond, 14k Gold

Heart Pendant 2 Carat
By Belfiore Jewelry
Located in Great Neck, NY
Tiffany style heart pendant set in 14K white gold. The stones are set with 0.10 carats each. The color is G. Clarity is SI. Total weight of pendant is 2.00 carats. Price of the heart...
Category

21st Century and Contemporary Modern More Jewelry

Materials

White Diamond, 14k Gold

3 Carat Spiral Diamond Bangle
By Belfiore Jewelry
Located in Great Neck, NY
Diamond Flex bangle in a spiral shape set in 14K white gold. The stones are graduated in size and the total weight of the piece is 3.06 carats. The color of the stones are G, the cla...
Category

21st Century and Contemporary Modern Bangles

Materials

Diamond, 14k Gold

1 Carat Princess Cut Diamond 14 Carat White Gold Ring
By Antinori Fine Jewels
Located in Rome, IT
Cocktail ring with 1 carat of natural diamonds and approximately 11 grams of gold! This ring has a big look as it is set with 20 princess cut diamonds and 44 round brilliant cut diam...
Category

2010s Modern Solitaire Rings

Materials

Diamond, White Diamond, White Gold, 14k Gold

3 Carat Diamond Hoop Earrings
By Belfiore Jewelry
Located in Great Neck, NY
Diamond hoops 1.25 inch diameter inside out. Color and Clarity of the stones are G-H, SI2. Total carat weight is 2.76. Stones are excellent cut. Set in 14K white gold.
Category

2010s Modern Hoop Earrings

Materials

Diamond, 14k Gold

8.00 Carat Diamond Tennis Bracelet, Each Stone 0.20 Carat
By Diana M. Jewels
Located in New York, NY
Timeless four prong diamond tennis bracelet: - 8.00 Carats of Round Brilliant Cut Diamonds - Each stone approx. 0.20 Carats -G-H in Color, SI-I in Clarity - 100% eye clean diamonds
Category

21st Century and Contemporary Tennis Bracelets

Materials

Diamond, White Diamond, 14k Gold

Flawless D Color 2.07 Carat Diamond Studs 18 Carat White
By Antinori Fine Jewels
Located in Rome, IT
Gorgeous 2 carat earrings with two investment grade brilliant diamonds. These stones must be considered as an investment, being color D and transparency Flawless. The two stones are...
Category

2010s Modern Stud Earrings

Materials

Diamond, White Diamond, White Gold

Certified 2 Carat Diamond VS Quality Flower/Cluster Earring Platinum 0.7 Carat
Located in New York, NY
A fabulous pair of earrings with an enormous amount of look and sparkle! 2.2 carats of F-G color VS clarity diamonds set in solid platinum with omega backs. Cluster earrings, center...
Category

Vintage 1980s Stud Earrings

Materials

Diamond, Platinum

14 Carat Diamonds & 8 Carat Colombian Emerald Platinum Tennis Bracelet 8" Estate
Located in New York, NY
14 Carat Diamonds and 8 Carat Colombian Emerald Platinum & 18 Karat Yellow Gold Cocktail Tennis Bracelet Estate A spectacular jewelry piece from Estate. This exceptional bracelet h...
Category

Vintage 1980s Tennis Bracelets

Materials

Emerald, Diamond, Platinum, 18k Gold

Antique 12.69 Carat Zircon and 1.04 Carat Diamond Necklace
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 12.69 carat zircon and 1.04 carat diamond, palladium necklace with a platinum chain; part of our diverse antique jewelry and estate jewelry co...
Category

Vintage 1910s Pendant Necklaces

Materials

Diamond, Zircon, Palladium

4 Carat Diamond Hoops Earrings
By Belfiore Jewelry
Located in Great Neck, NY
14K white gold diamond hoops are set with stones inside and out. This is a very elegant and wearable diamond hoop. Each stone weighs 20 points. The total weight is 4.06 carats. The c...
Category

2010s Modern Hoop Earrings

Materials

Diamond, 14k Gold

5 Carat Diamond Necklace Halfway
By Belfiore Jewelry
Located in Great Neck, NY
Diamond necklace set halfway in 14K white gold. Each stone weighs 0.05 carats, the diamond weight is 4.90 carats. The color of the stones are G, the clarity is SI1-SI2. The total len...
Category

21st Century and Contemporary Modern More Necklaces

Materials

Diamond, 14k Gold

8 Carat Tennis Diamond Bracelet
By Antinori Fine Jewels
Located in Rome, IT
8 Carat Tennis Diamond Bracelet
Category

2010s Modern Chain Bracelets

Materials

Diamond, White Diamond, 14k Gold, White Gold

5.11 Carat Cushion Ceylon Sapphire
Located in New York, NY
A CDC certified Royal blue, Sri Lankan cushion sapphire. This stone is very saturated and cut to perfection! Will look beautiful in any jewelry!
Category

2010s More Jewelry

Materials

Sapphire

3 Carat Tanzanite and 2 Carat Diamond Heart Pendant/ Necklace 18 Karat Gold
Located in New York, NY
Fix the ct weight and make the listing, only pictures are loaded 3 carats of fine quality of Tanzanite pendant surrounded by brilliant round cut Diamonds all mounted in 18 karat ...
Category

2010s Drop Necklaces

Materials

Diamond, Tanzanite, 18k Gold, White Gold

1.13 Carat Emerald and 1.11 Carat Diamond Platinum Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 1.13 carat emerald, 1.11 carat diamond, 18 karat yellow gold and platinum dress ring; part of our diverse gemstone jewellery and estate jewelry collec...
Category

2010s Contemporary Fashion Rings

Materials

Diamond, Emerald, Yellow Gold, Platinum

3 Carat Fancy Yellow Radiant Diamond 18 Carat White Gold Studs
By Antinori Fine Jewels
Located in Rome, IT
This stunning and substantial 3 carat pair of radiant cut diamonds is completely eye clean, displays gorgeous, cheery yellow color, and sparkles with fantastic brilliance! The diamon...
Category

2010s Modern Clip-on Earrings

Materials

Diamond, Yellow Diamond, 18k Gold, White Gold

Snake Diamond Bangle 2 Carat
By Belfiore Jewelry
Located in Great Neck, NY
Diamond bangle set in 14K white gold. This italian made piece is set with 2 pointer diamonds, making the total weight 2.05 carats. The color of the stones are G, the clarity is SI1-SI2.
Category

21st Century and Contemporary Modern Bangles

Materials

Diamond, 14k Gold

Antique 1.98 Carat Emerald 5.22 Carat Diamond Platinum Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 1.98 Ct emerald and 5.22 Ct diamond brooch in platinum; part of our authentic antique Art Deco jewelry/jewelry collection. This stunning example of a...
Category

Vintage 1930s Art Deco Brooches

Materials

Diamond, Emerald, Platinum

10.00 Carat Diamond Tennis Bracelet, Each Stone 0.25 Carat
By Diana M. Jewels
Located in New York, NY
Timeless four prong diamond tennis bracelet: - 10.00 Carats of Round Brilliant Cut Diamonds - Each stone approx. 0.25 Carats -G-H in Color, SI I in Clarity - 100% eye clean diamonds
Category

21st Century and Contemporary Tennis Bracelets

Materials

Diamond, 14k Gold, White Gold

Cluster Diamond Earrings 3 Carat
By Belfiore Jewelry
Located in Great Neck, NY
These gorgeous Cluster Earrings are a must have piece to add to your jewelry collection. Any look or occasion can be tied together with these timeless earrings. The carat weight is 3...
Category

2010s Modern More Earrings

Materials

Diamond, 14k Gold

Platinum Eternity Ring 7 Carats.
By Belfiore Jewelry
Located in Great Neck, NY
This Low setting eternity band is absolutely a magnificent piece. Total weight is 6.76 carats. The ring consists of 13 stones each weighing approximately 0.50 carats. The color is G-...
Category

2010s Modern Bridal Rings

Materials

Diamond, Platinum

21 Carat Natural Untreated Diamond Tennis Necklace 18 Carat White Gold
By Antinori Fine Jewels
Located in Rome, IT
This gorgeous necklace will simply take your breath away! It features a 65 natural round brilliant cut diamonds.These sparkling diamonds conservatively grade as F/G VS1-SI1 in qualit...
Category

2010s Modern Chain Necklaces

Materials

Diamond, 18k Gold, White Gold

2 Row Diamond Ring 3 Carats
By Belfiore Jewelry
Located in Great Neck, NY
2 Row diamond ring set halfway in 14K white gold. The ring is set with 20 stones each weighing 0.15 carats. The total weight of the ring is 3.00 carats. The color of the stones are G...
Category

21st Century and Contemporary Modern Bridal Rings

Materials

Diamond, 14k Gold

Certified 3.15 Carat Tsavorite
Located in London, GB
Exquisite 3.15 carat oval Tsavorite, this vibrant green stone would look marvellous in a ring or pendant. We specialise in colour gemstones and offer a bespoke jewellery service. Th...
Category

21st Century and Contemporary Contemporary More Earrings

Materials

Tsavorite

  • Certified 3.15 Carat Tsavorite
  • Certified 3.15 Carat Tsavorite
  • Certified 3.15 Carat Tsavorite
  • Certified 3.15 Carat Tsavorite
W 0.3 in. D 0.24 in. L 0.39 in.
GIA 5 Carat Radiant Diamond Ring, Platinum Solitaire 5.00 Carat Diamond, Sparkle
By Five Star Jewelry
Located in Austin, TX
Gorgeous 5.00ct radiant diamond solitaire engagement ring! With a GIA certified 5 carat, radiant cut diamond set in 4 elegant platinum prongs. The platinum engagement ring is the per...
Category

2010s Modern Engagement Rings

Materials

Diamond, Platinum

GIA Report Certified 10.01 Carat & 5.01/5.02 Carat Emerald Cut Diamonds
Located in Brooklyn, NY
The stunning GIA Report Certified 10.01-carat emerald cut loose diamond with VS2 clarity and U to V range color grade. Excellent in polish and symmetry, one-of-a-kind piece. This acc...
Category

2010s More Jewelry

Materials

Diamond

4 Carat Round Brilliant Cut Diamond 18 Carats Yellow Gold Studs
By Antinori Fine Jewels
Located in Rome, IT
An amazing pair of very fine diamonds. The main stones are very pleasant to the eye they are approximetely H color and i1/I2 clarity but the inclusions are well hidden. The inclusi...
Category

2010s Modern Clip-on Earrings

Materials

Diamond, White Diamond, 18k Gold, Yellow Gold

Natural Diamonds 8 Carat 18 Carat White Gold Tennis Bracelet F/G VS
By Antinori Fine Jewels
Located in Rome, IT
An amazing and susbtancial 8 carat round brilliant cut diamond tennis. 18 carats white gold All the stones are F/G color clarity is VS Excellent Cut
Category

2010s Modern Tennis Bracelets

Materials

White Diamond, Diamond, White Gold

7 Carat Round Brilliant Cut 18 Carat White Gold Tennis Necklace
By Antinori Fine Jewels
Located in Rome, IT
Timelessly elegant riviera necklace dazzles with 7.40 carats of bright white, eye clean, and excellently cut diamonds. Exceptionally well cut, these diamonds are very bright and live...
Category

2010s Modern Chain Necklaces

Materials

White Diamond, 18k Gold, White Gold

6 Carat Emerald Cut Colombian Emerald and 4 Carat Diamond Ring Platinum Two-Tone
Located in New York, NY
6 Carat Emerald Cut Colombian Emerald and 4 Ct Diamond Ring Platinum, Two-Tone A classic, Cocktail ring 6 Carat Colombian Emerald Absolutely gorgeous emerald , Very desirable colo...
Category

2010s Cocktail Rings

Materials

Diamond, Emerald, Platinum

1 1/2 Carat Oval Blue Sapphire GIA
Located in San Francisco, CA
This Oval shape 1.46-carat Natural Blue color sapphire GIA certified has been hand-selected by our experts for its top luster and unique color
Category

21st Century and Contemporary More Rings

Materials

Blue Sapphire

1.86 Carat Opal and 3.22 Carat Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning contemporary 1.86 carat opal and 3.22 carat diamond, platinum dress ring; part of our diverse opal estate jewelry collections. This stunning, fine and impressive opal and...
Category

Early 2000s Cocktail Rings

Materials

Diamond, Opal, Platinum

Tsavorite 8.32 Carat Loose Gemstone
By Jochen Leën
Located in Antwerp, BE
8.32ct Tsavorite Emerald cut Color: Intens Green Provenance: Tanzania Dimensions: 13,4 x 10,1 x 6,25 mm Clarity: Flawless
Category

2010s Contemporary Cocktail Rings

Materials

Tsavorite

Antique 4.10 Carat Opal and 0.72 Carat Diamond Yellow Gold Bracelet
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 4.10 carat opal and 0.72 carat diamond, 15 karat yellow gold bracelet; part of our diverse antique jewellery and estate jewelry collections This fine and impre...
Category

Vintage 1930s Link Bracelets

Materials

Diamond, Opal, Yellow Gold

  • Antique 4.10 Carat Opal and 0.72 Carat Diamond Yellow Gold Bracelet
  • Antique 4.10 Carat Opal and 0.72 Carat Diamond Yellow Gold Bracelet
  • Antique 4.10 Carat Opal and 0.72 Carat Diamond Yellow Gold Bracelet
  • Antique 4.10 Carat Opal and 0.72 Carat Diamond Yellow Gold Bracelet
H 0.16 in. W 0.49 in. D 0.16 in. Dm 0.49 in. L 7.13 in.
39.64 Carat Tsavorite Loose Gemstone
By Jochen Leën
Located in Antwerp, BE
39.64 Carat Tsavorite Slightly yellowish-green Provenance: East Africa Princess cut: 19.42 x 19.38 x 13.24 mm
Category

2010s Contemporary Pendant Necklaces

Materials

Tsavorite

  • 39.64 Carat Tsavorite Loose Gemstone
  • 39.64 Carat Tsavorite Loose Gemstone
  • 39.64 Carat Tsavorite Loose Gemstone
  • 39.64 Carat Tsavorite Loose Gemstone
W 0.77 in. D 0.53 in. L 0.77 in.
African Tanzanite, 3.20 Carat and .50 Carat VS Diamond
Located in Aliso Viejo, CA
African Tanzanite, 3.20 Ct and .50 Ct VS.Diamond Size 7 ring size. 10.20 x 8.50 mm high quality Tanzanite solitaire accented by diamonds on either side (14 diamonds total .50 carat...
Category

21st Century and Contemporary Contemporary Solitaire Rings

Materials

Diamond, Tanzanite, 14k Gold

5.68 Carat Diamond and 2.35 Carat Sapphire Platinum Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning antique Art Deco 5.68 carat diamond and 2.35 carat sapphire, platinum brooch; part of our diverse antique jewelry and estate jewelry collections. This stunning, fine and ...
Category

Vintage 1930s Art Deco Brooches

Materials

Diamond, Sapphire, Platinum

4 Carat Blue Sapphire Diamond 18 Carat White Gold Ring
By Antinori Fine Jewels
Located in Rome, IT
A striking and high quality sapphire and diamond ring has an eye catching, glamorous design featuring a royal blue sapphire surrounded by a halo of vibrant, very high quality diamond...
Category

2010s Cocktail Rings

Materials

Diamond, White Diamond, Blue Sapphire, 18k Gold, White Gold

4 Carat Pear Shape Diamond Earrings
By Belfiore Jewelry
Located in Great Neck, NY
Multi-cut stones set in 18K white gold that create the illusion of single pear shape diamond. These stunning earrings are a black tie Harry Winston look. The total carat weight is 4....
Category

21st Century and Contemporary Modern Lever-Back Earrings

Materials

Diamond, 18k Gold

1 1/3 Carat Cushion Blue Sapphire GIA
Located in San Francisco, CA
This Cushion shape 1.28-carat Natural Blue color sapphire GIA certified has been hand-selected by our experts for its top luster and unique color
Category

21st Century and Contemporary More Rings

Materials

Blue Sapphire

11.49 Carats Pink Tourmaline and 1. Carat Diamond Gold Ring
Located in Tucson, AZ
Pink Tourmalines with no inclusions are very rare. They are accepted in the trade with internal identifying characteristics and are classified as type 3 stones. The vibrant pink/purp...
Category

21st Century and Contemporary Modern Fashion Rings

Materials

Diamond, Tourmaline, 14k Gold, Yellow Gold

1.80 Carat Old Cut Diamond 18 Carats Yellow Gold Ring
By Antinori Fine Jewels
Located in Rome, IT
This stunning old European cut diamond is completely eye clean, faces up beautifully white, and displays dazzling brilliance with vividly colorful fire. Cut by hand a lifetime ago, t...
Category

2010s Art Deco Engagement Rings

Materials

Diamond, Yellow Gold

GIA 5 Carat Radiant Diamond Ring, Platinum Solitaire 5.00 Carat Diamond, Sparkle
By Five Star Jewelry
Located in Austin, TX
Gorgeous 5.00ct radiant diamond solitaire engagement ring! With a GIA certified 5 carat, radiant cut diamond set in 4 elegant platinum prongs. The platinum engagement ring is the per...
Category

2010s Modern Engagement Rings

Materials

Diamond, Platinum

16.65 Carat Pink Tourmaline 3.60 Carat Sapphire .52 Carat Diamond Cocktail Ring
By Tom Castor
Located in Lambertville , NJ
A 16.65 Carat Natural Brazilian Pink Tourmaline of Gem Clarity and Exceptional Cutting is the centerpiece of this one of a kind ring by Tom Castor. The oval brilliant cut center ston...
Category

2010s Artisan Cocktail Rings

Materials

Diamond, White Diamond, Tourmaline, Sapphire, Blue Sapphire, Gold, White...

21 Carat Natural Untreated Diamond Tennis Necklace 18 Carat White Gold
By Antinori Fine Jewels
Located in Rome, IT
This gorgeous 21 Ct necklace will simply take your breath away! It features a 65 natural round brilliant cut diamonds.These sparkling diamonds conservatively grade as F/G VS1-SI1 in ...
Category

2010s Modern Chain Necklaces

Materials

Diamond, 18k Gold, White Gold

3.63 Carat Sapphire with 3.10 Carat Diamond Cluster Ring
Located in Istanbul, TR
Sapphire ring sapphire : 3,63 Ct's diamond : 3,10 Ct's G VVS2 total weights : 13.85 gr
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

1.25 Carat Diamond Round Brilliant Cut Engagement Ring White Gold 1 Carat
By Antinori Fine Jewels
Located in Rome, IT
Gorgeous engagement ring. It is a classic ring that combines beautiful brilliance with an eternally elegant design. The substantial 1.01 carat center diamond is beautifully white and...
Category

2010s Modern Engagement Rings

Materials

Diamond, White Gold

  • 1
  • ...

1 Carat For Sale on 1stDibs

You are likely to find exactly the 1 carat you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, 18k Gold and White Gold, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect 1 carat among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those produced as recently as the 21st Century. For this particular piece, .5 Carat and 1 Carat are consistently popular carat weights. A 1 carat from LB Exclusive, Tiffany & Co. and Roman Malakov — each of whom created a beautiful version of this treasured accessory — is worth considering. Take a look at a 1 carat featuring Diamond from our inventory today to add the perfect touch to your look. A round cut version of this piece has appeal, but there are also oval cut and emerald cut versions for sale. When shopping for a 1 carat, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 1 Carat?

On average, a 1 carat at 1stDibs sells for $4,572, while they’re typically $1 on the low end and $475,940,000 for the highest priced versions of this item.
Questions About 1 Carat
  • 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.