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12 Carat

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12 Carat Diamond Broach in Platinum
Located in New York, NY
Gorgeous 12 carat diamond broach in platinum. The details are as follows : Diamond weight : 12
Category

2010s Brooches

Materials

Diamond, Platinum

12 Carat Diamond Platinum Necklace
Located in Bay Harbor Islands, FL
12 carats. It is further set with a natural color yellow diamond weighing approximately 0.50 carats
Category

Vintage 1940s Unknown More Necklaces

Materials

Diamond, Yellow Diamond, Platinum

12 Carat Diamond Platinum Necklace
12 Carat Diamond Platinum Necklace
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L 15.63 in
GIA Certified 12 Carat Diamond Fancy Yellow Radiant Ring
By Antinori Fine Jewels
Located in Rome, IT
An exquisite 12 carat fancy yellow radiant cut diamond solitaire ring with two side trillion cut
Category

2010s Italian Cocktail Rings

Materials

Diamond, Yellow Diamond

Cartier Art Deco 12 Carat Diamond Platinum Bracelet
By Cartier
Located in New York, NY
Exquisite Cartier circa 1930s, Art Deco platinum bracelet, with approximately 12 carats in diamonds
Category

20th Century French More Bracelets

Materials

Diamond, Platinum

12 Carat Natural Ruby 3.5 Carat Diamond Cluster Ring
Located in Bay Harbor Islands, FL
Ruby ring set with an oval ruby weighing approximately 12 carats, and 2 pear shape rubies weighing
Category

Vintage 1940s Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

GIA Certified 12 Carat Diamond Fancy Intense Yellow FLAWLESS Clarity
By Antinori Fine Jewels
Located in Rome, IT
GIA Certified 12 Carat Diamond Fancy Intense Yellow Cushion Cut Ring, set in solid platinum
Category

2010s Italian Cocktail Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum

.12 Carat Total Weight Diamond White Gold Wedding Band
Located in Atlanta, GA
Single Cut Carat Weight: .12 carat, total weight Color: F Clarity: VS Finger to Top of Stone
Category

Vintage 1930s Unknown Art Deco Band Rings

Materials

White Diamond, 18k Gold, White Gold

12 Carat Natural Mined Emerald Diamond 18KT White Gold Hoop Earrings
Located in Los Angeles, CA
Exquisite 12 Carat Natural Mined Emerald Diamond Hoop Earrings - 18KT White Gold Description
Category

21st Century and Contemporary American Hoop Earrings

Materials

Diamond, White Gold

GIA Certified Golconda Type IIA 12 Carat Emerald Cut Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
GIA Certified Golconda Type IIA 12 Carat Emerald Cut Diamond Ring! 🌟 Step into a world of
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

12 Carat White Brilliant Cut Tennis Diamond Bracelet
By Antinori Fine Jewels
Located in Rome, IT
Indulge in the timeless allure of our exquisite 12-carat White Gold Round Brilliant Cut Diamond
Category

2010s Italian Modern Tennis Bracelets

Materials

Diamond, White Diamond, White Gold

12 Carats Amethyst 18 Carats Yellow Gold Marquise Ring
Located in Paris, FR
weight of the gem : 12 carats Dimensions: 24.40 x 15.35 x 9.91 mm (0.960 x 0.605 x 0.390 inch) Finger
Category

Vintage 1970s French Retro Cocktail Rings

Materials

Amethyst, 18k Gold, Yellow Gold

Multi Colored Sapphire Ring With Diamonds 12 Carats Total 18K Gold
Located in Carlsbad, CA
Multi Colored Sapphire = 12 Carats Cut: Emerald Diamonds = 0.60 Carats (Color: F, Clarity: VS
Category

21st Century and Contemporary Contemporary Band Rings

Materials

Purple Sapphire, Green Sapphire, Pink Sapphire, Blue Sapphire, Sapphire,...

Multi Colored Sapphire Ring With Diamonds 12 Carats Total 18K Gold
Located in Carlsbad, CA
Multi Colored Sapphire = 12 Carats Cut: Emerald Diamonds = 0.60 Carats (Color: F, Clarity: VS
Category

21st Century and Contemporary Contemporary Band Rings

Materials

Diamond, Sapphire, Blue Sapphire, Pink Sapphire, Green Sapphire, Purple ...

Multi Colored Sapphire Ring With Diamonds 12 Carats Total 18K Gold
Located in Carlsbad, CA
Multi Colored Sapphire = 12 Carats Cut: Emerald Diamonds = 0.60 Carats (Color: F, Clarity: VS
Category

21st Century and Contemporary Contemporary Band Rings

Materials

Diamond, Sapphire, Blue Sapphire, Pink Sapphire, Green Sapphire, Purple ...

Multi Colored Sapphire Ring With Diamonds 12 Carats Total 18K Gold
Located in Carlsbad, CA
Multi Colored Sapphire = 12 Carats Cut: Emerald Diamonds = 0.60 Carats (Color: F, Clarity: VS
Category

21st Century and Contemporary Contemporary Band Rings

Materials

Diamond, Sapphire, Blue Sapphire, Pink Sapphire, Green Sapphire, Purple ...

GIA Certified 12 Carat Emerald Cut Diamond Eternity Band Ring Platinum
By Antinori Fine Jewels
Located in Rome, IT
An incredible custom made eternity band ring composed by 12 carats of GIA certified diamonds D/F
Category

2010s Unknown Modern Bridal Rings

Materials

Diamond, White Diamond, Platinum

12 Carat Cabochon Emerald Diamond Clip Earrings 14 Karat Yellow Gold, Estate
Located in New York, NY
12 Carat Cabochon Emerald Diamond Clip Earrings 14 Karat Yellow Gold, Estate This exquisite pair
Category

1990s Stud Earrings

Materials

Diamond, Emerald, 14k Gold

18K Yellow Gold Citrine With Multiple Gemstones Ring Approximately 12 Carats
Located in Bradenton, FL
mm x 15 mm. Approximately 12 carats. 18K tested. Approximate size 6.5.
Category

Mid-20th Century Modern Cocktail Rings

Materials

Citrine, 18k Gold, Yellow Gold

GRS Certified 12 Carat NO HEAT Burmese Ruby Oval Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
diamonds in a handmade platinum setting Ruby total weight 12 carats Diamond total weight 1 carats Ring size
Category

2010s Italian Modern Cocktail Rings

Materials

Diamond, White Diamond, Ruby, Platinum

Antique Italian 12 Carats Yellow Gold Filigree Seed Pearl Pendant Earrings
Located in Marcianise, CE, IT
Antique (circa 1800) and pretty Italian 12 carats yellow gold filigree pendant earrings with seed
Category

Antique 19th Century Italian Romantic Dangle Earrings

TYPE IIA Golconda type GIA Certified 12 Carat Oval Diamond Pave Ring
By Antinori Fine Jewels
Located in Rome, IT
12 carat GIA Certified D Color Internally Flawless Clarity Oval cut diamond is set in a handcrafted
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

Platinum Diamond Cluster Clip On Earrings 12 Carats G-H SI
By Harbor Diamonds
Located in New York, NY
approximately 12 carats, in Platinum. A hook can be added to add a drop. DM for more information.
Category

2010s Contemporary Clip-on Earrings

Materials

Diamond, Platinum

David Webb Platinum & 18K Yellow Gold 12 Carat Diamond Crescent Brooch
By David Webb
Located in New York, NY
. This lovely brooch is set with round cut diamonds of approx. 12 carats. Brooch measures 2.25 inches.
Category

20th Century American Modern Brooches

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

12 Carat Coral and Diamond Platinum Ring Estate Fine Jewelry
Located in Montreal, QC
with an Awesome 12 Carat Cabochon Red Coral, accented by Diamonds, weighing approx. 0.16tcw. Hand
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Coral, Diamond, Platinum

TYPE IIA Golconda GIA Certified 12 Carat Oval Diamond Platinum Solitaire Ring
By Antinori Fine Jewels
Located in Rome, IT
diamond, certified by GIA, and boasting an impressive 12 carats. Crafted to perfection and set in
Category

2010s Contemporary Solitaire Rings

Materials

Diamond, Platinum

12 Carat Riviera Diamond Necklace
By Belfiore Jewelry
Located in Great Neck, NY
Graduated 3 prong diamond necklace set in 14K white gold. The center stone weighs 0.75 carats. The
Category

21st Century and Contemporary American Modern More Necklaces

Materials

Diamond, 14k Gold

12 carats tennis bracelet 14KT white gold luxury bracelet
Located in Boca Raton, FL
12 carats diamond bracelet-192 diamonds and 60 grams, diamonds are VS-SI clarity and F-G color, the
Category

21st Century and Contemporary Tennis Bracelets

Materials

Diamond, 14k Gold, White Gold

South Sea Pearl Day & Night with 12 Carat Diamond Cocktail Earrings 18 K Gold
Located in New York, NY
South Sea Pearl Day & Night with 12 Carats Diamond Cocktail Earrings 18 K White Gold , Beautiful
Category

Early 20th Century Stud Earrings

Materials

Diamond, South Sea Pearl, 18k Gold

GIA Certified 12 Carat Emerald Cut FLAWLESS D COLOR Type IIA Diamond Ring
By Antinori Fine Jewels
Located in Rome, IT
Unrivaled Opulence: GIA Certified 12 Carat Flawless D Color Type IIA Emerald Cut Diamond Ring
Category

2010s Unknown Contemporary Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

12 Carat Round Brilliant Cut Natural Diamonds Set in a 14 Karat Gold Bracelet
Located in Houston, TX
12 Carat total weight round brilliant cut natural diamonds set in a 14K yellow gold bracelet. Box
Category

2010s American Link Bracelets

Materials

Diamond, Gold, 14k Gold

Platinum 12 Carat Diamond One Line Tennis Princess and Emerald Cut Bracelet
Located in New York, NY
This is a beautiful Platinum 12 Carat Diamond One Line Tennis Princess And Emerald Cut Bracelet
Category

20th Century American Modern Tennis Bracelets

Materials

Diamond, Platinum

Vintage Natural Oval Amethyst & Old Euro Diamond Halo Ring Platinum 12 Carat
Located in Carmel-by-the-Sea, CA
: Natural Amethyst Shape: Oval Brilliant Weight: 12 Carats Color: Medium purple violet Clarity: Eye Clean
Category

Vintage 1950s More Rings

Materials

Amethyst, Diamond, Yellow Gold, Platinum

18 Karat Yellow Gold, .12 Carat Diamond and Enamel Baby Shoe Charm
Located in New York, NY
set with .12 carats of diamonds . The bootie measures approximately 1" from the bale to the toe. Ideal
Category

Early 2000s American Modern Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold, Enamel

Retro 12 Carat Gold Natural Emerald Cut Blue Topaz Gem Stone Earrings circa 1970
Located in Los Angeles, CA
approximately 12x9.5x6.5mm. Total weight is approximately 12 carat, actual weight of the earrings is 7.2 grams.
Category

Vintage 1970s Unknown Retro Stud Earrings

Materials

Topaz, Gold

12 Carat Riviera Diamond Tennis Necklace
By Antinori Fine Jewels
Located in Rome, IT
White Gold Karat 14K Four-prong setting riviera tennis necklace Graduated tennis necklace with round diamonds four-prong set.
Category

2010s Italian Modern Chain Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

12 Carat Blue Chalcedony Diamond Designer Stambolian Ring Estate Fine Jewelry
By Stambolian
Located in Montreal, QC
securely nestled with a Hand set 12 Carat Blue Chalcedony and accented by Diamonds, weighing approx
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Chalcedony, Diamond, 18k Gold, Yellow Gold

Vintage 14k Gold Amethyst Floral Flower Cluster Earrings 12 Carats 11.3 Grams
Located in Lauderdale by the Sea, FL
- approx 12 carats of Amethyst in both earrings combined! They measure approx 0.92 in diameter and weigh
Category

Late 20th Century American Modern More Earrings

Materials

14k Gold

12 Carat Treated Ruby & 2.8 Carat Diamond Tennis Bracelet 14 Kt Yellow Gold
Located in New York, NY
12 Carat Treated Ruby & 2.8 Carat Diamond Tennis Bracelet 14 Kt Yellow Gold This exceptionally
Category

2010s Tennis Bracelets

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

12 Carat Natural Emerald & 2.8 Carat Diamond Tennis Bracelet 14 Kt Yellow Gold
Located in New York, NY
12 Carat Natural Emerald & 2.8 Carat Diamond Tennis Bracelet 14 Kt Yellow Gold This exceptionally
Category

2010s Tennis Bracelets

Materials

Diamond, Emerald, Yellow Gold, 14k Gold

35 Carat Natural Coral and 12 Carat DeBeers Diamond Cocktail Earring in Platinum
Located in New York, NY
brilliant diamonds are surrounding the Round Coral. Diamonds: approximate 12 carat , VS Quality E color
Category

Early 20th Century Stud Earrings

Materials

Diamond, Coral, Platinum

Tanzanite and 12 Carat Diamond Bracelet in 18K Gold, circa 1970
Located in Goettingen, DE
Tanzanite and 12 Carat Diamond Bracelet in 18K Gold, circa 1970 Very distinctive, floral bracelet
Category

Vintage 1970s Link Bracelets

Materials

Diamond, Tanzanite, 18k Gold, Yellow Gold

Berca One of a Kind 12 Carat Natural Moonstone Cabochon Sterling Silver Ring
By Berca Atelier
Located in Valenza, IT
One-of-a-kind, Contemporary, Chic yet Timeless Cocktail Ring Featuring a 12 Carat Natural Grey
Category

21st Century and Contemporary Italian Contemporary Cocktail Rings

Materials

Moonstone, Sterling Silver

Inside Out 12 Carat Princess Burma Rubies 2 Inch Long Yellow Gold Hoop Earrings
By OGI Ltd
Located in New York, NY
Introducing the stunning Inside Out 12 Carat Princess Burma Rubies, total 95 stones, two Inch
Category

2010s American Contemporary Hoop Earrings

Materials

Ruby, Gold, 14k Gold, Yellow Gold

Emilio Jewelry GIA Certified 12 Carat Fancy Yellow Diamond Ring
By Emilio!
Located in New York, NY
Showcasing a spectacular GIA certified 12 Carat Natural fancy yellow diamonds with excellent
Category

21st Century and Contemporary Three-Stone Rings

Materials

Yellow Diamond, 18k Gold, Platinum

Opera Tennis Necklace 12 Carats 36 Inch
By Belfiore Jewelry
Located in Great Neck, NY
Opera necklace 36 inch set in 14K white gold. Each stone weighs 0.06 carats. The total weight is
Category

2010s Italian Modern More Necklaces

Materials

Diamond, 14k Gold

Vintage 12 Carat NO HEAT GIA Sapphire and Diamond Gold Brooch Pendant Necklace
Located in Montreal, QC
approx. 12 Carats. GIA report #2235104643. Surrounded by RBC Diamonds, weighing approx. 2.85tcw
Category

21st Century and Contemporary Modern Pendant Necklaces

Materials

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

.12 Carat Diamond Pearl White Gold Necklace
Located in Stamford, CT
1970's 8.5mm, 18-Inch cultured pearl necklace with double sided 18k white gold diamond catch. Pearls are white light natural cream overtone well matched, good lustre, few blemishes. ...
Category

Late 20th Century More Necklaces

Materials

Diamond, Pearl, Gold, 18k Gold, White Gold

1960s 12 Carat Diamond Cocktail Stud Earrings in 18 Karat White Gold
Located in New York, NY
prongs , weighing approximately 12 carat total set in 18 Karat white gold Clarity -VS2 Color G Size
Category

Vintage 1960s Stud Earrings

Materials

Diamond, 18k Gold

Vintage 12 Carat Cabochon Cut Chalcedony Quartz & Sapphire Ring in 14K Gold Ring
By Gad & Co.
Located in Miami, FL
bezel and tension settings. The center stone is a 12-carat Cabochon Cut Chalcedony Quartz, measuring
Category

20th Century North American Artist Cocktail Rings

Materials

Chalcedony, Quartz, Sapphire, 14k Gold

Vintage 12 Carat Blue Aquamarine and Diamond Cocktail Ring 14k Yellow Gold
Located in beverly hills, CA
CUT: Early Modern Brilliant QUANTITY: 12 CARAT WEIGHT: 0.36 ctw CLARITY GRADE: VS COLOR GRADE: G-H
Category

Mid-20th Century Retro Cocktail Rings

Materials

Diamond, Aquamarine, 14k Gold, Yellow Gold

12 Carat Channel Set Art Deco Style Ruby & Diamond Bracelet in 18k White Gold
Located in Miami, FL
18K White Gold. 12 carats total of rubies and diamonds. Details:  ✔ Item Type: Bracelet ✔ Metal: 18k
Category

21st Century and Contemporary Art Deco Link Bracelets

Materials

Diamond, Ruby, Gold, 18k Gold, White Gold

1940s 12 Carat Aquamarine and 14K White Gold Earrings with Diamonds and Rubies
Located in New York, NY
This stunning pair of retro earrings were realized in the United States, circa 1940. They offer 12
Category

Vintage 1940s American Retro Stud Earrings

Materials

Aquamarine, Diamond, Ruby, 14k Gold

6. 12 Carat Tanzanite Diamond Cocktail Ring
By Mehnaz Durrani
Located in Richmond, BC
Stunning tanzanite diamond cocktail ring. Violet-blue, high luster, pear faceted, 6.12 carats
Category

21st Century and Contemporary Canadian Contemporary Cocktail Rings

Materials

Diamond, Tanzanite, 14k Gold

Mindi Mond 12 Carat Old Mine and Rose Cut Diamond Victorian Style Gold Earrings
By Mindi Mond
Located in New York, NY
this amazing setting and 12 Carat of glistening diamonds. We added the large 2 rose cut diamonds ( also
Category

Antique Late 19th Century Victorian Dangle Earrings

Materials

Diamond, 18k Gold, Yellow Gold

12 Carat Diamond White Gold 750 Necklace
Located in Lucerne, CH
313 brilliant cut diamonds totaling approx. 12 ct of G/H-vs quality. A brilliant piece! Please, ask
Category

21st Century and Contemporary Italian Contemporary More Necklaces

Materials

White Diamond, Diamond, 18k Gold, White Gold

12 Carat Opera Length Diamond Line Necklace
Located in Aspen, CO
Dramatic opera length double wire necklace adorned with approximately 12.12 carats of princess cut
Category

2010s American Contemporary More Necklaces

Materials

Diamond, 14k Gold

Art Deco Platinum 12 Carat Diamond Bracelet
Located in New York, NY
Chic & impressive Art Deco platinum and diamond bracelet, circa 1920s. It features approx. 12-13cts
Category

Early 20th Century American Art Deco Link Bracelets

Materials

Diamond, Platinum

Art Deco Platinum 12 Carat Diamond Bracelet
Art Deco Platinum 12 Carat Diamond Bracelet
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H 0.38 in W 7 in D 0.13 in
12 Carat Cushion Cut Natural Pink Tourmaline & Diamond 14 Karat Yellow Gold Ring
Located in New York, NY
Approximately 12 Carat Cushion Cut Natural Pink Tourmaline & Diamond 14 Karat Yellow Gold Ring 12
Category

2010s Cocktail Rings

Materials

Tourmaline, Diamond, 14k Gold, Yellow Gold

12 Carat Pink Sapphire Diamond Cocktail Ring 18k
By Antinori Fine Jewels
Located in Rome, IT
This exquisite Cocktail/Statement Ring in 18k White Gold showcases a total weight of 12.14 carats
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Pink Sapphire, 18k Gold, White Gold

12 Carat Fancy Intense Yellow VS1 Radiant Cut Diamond Three Stone Platinum Ring
Located in New York, NY
Vivid Radiant Cut Diamond. This diamond is of a remarkable 12 carats and boasts a deep fancy yellow
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Platinum

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12 Carat For Sale on 1stDibs

You are likely to find exactly the 12 carat you’re looking for on 1stDibs, as there is a broad range for sale. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and White Gold. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect 12 carat may mean sifting through those created during different time periods — you can find an early version that dates to the 18th Century and a newer variation that were made as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. There have been many well-made iterations of the classic 12 carat over the years, but those made by LB Exclusive, Luigi Ferrara and Harbor Diamonds are often thought to be among the most beautiful. While most can agree that any 12 carat from our collection can easily elevate most outfits, but the choice of a Diamond version from the 1408 available is guaranteed to add a special touch to your ensemble. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and emerald cut cut versions available here, too. Finding a 12 carat for sale for women should be easy, but there are 489 pieces available to browse for unisex as well as men, too.

How Much is a 12 Carat?

Prices for a 12 carat can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $99 and can go as high as $2,699,999, while this accessory, on average, fetches $7,383.
Questions About 12 Carat
  • 1stDibs ExpertFebruary 22, 2021
    The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.