Skip to main content

2a Cut 12 Carat Diamond

24
to
193
1,236
319
1,034
700
245
238
215
171
67
64
60
59
55
52
43
42
40
39
33
31
18
11
10
6
5
5
4
3
2
1
1
1
1
1
1
1
36
16
15
14
13
Sort By
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

2.49 Carat Oval Blue Sapphire Round Diamond Hasbani 18Kt Halo Engagement Ring
By Hasbani Diamonds
Located in London, GB
Sapphire: 1.95 Carat Diamond: 0.54 Carat (total weight 12 stones) Band Width: 2 mm Head Width: 13x12mm
Category

2010s British Modern Engagement Rings

Materials

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

3.46 Carat Oval Blue Sapphire Round Diamond Hasbani 18Kt Halo Engagement Ring
By Hasbani Diamonds
Located in London, GB
surrounded by a claw set diamond halo With a total diamond weight of 0.99 carat white colour G, clarity VS
Category

2010s British Modern Engagement Rings

Materials

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

Vivid Diamonds AGL Certified 5.91 Carat Burma No Heat Sapphire & Diamond Ring
By Vivid Diamonds
Located in Miami, FL
encircled by 12 round brilliant-cut diamonds with a combined weight of approximately 2 carats, H-I color
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Vintage 2.62 Carat Diamond and 12 Karat White Gold Cluster Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage 2.62 carat diamond and 12 karat white gold cluster ring
Category

Vintage 1960s Unknown Cocktail Rings

Materials

Diamond, White Gold

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

0.15 Carat Princess Cut Diamond Cathedral Engagement Ring
Located in Sherman Oaks, CA
setting Clarity: SI-2 Color: H Twelve channel set baguette cut (tapered) diamonds Measure from 1.50 x 1.20
Category

Early 2000s American Modern Engagement Rings

Materials

Diamond, 14k Gold

150 Carat Custom-Cut Golden Quartz & Diamond Pendant in White Gold
By Eytan Brandes
Located in Sherman Oaks, CA
earth-mined and full cut diamonds with a total weight of 0.40 carats. The four diamonds on the bale are
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Quartz, Gold, 14k Gold, White Gold

23.55 Carat Emerald Cut Emerald and Diamond Necklace
Located in METAIRIE, LA
. Finished with a larger 0.30 carat 3.2mm Nearly Colorless Nearly Flawless Round Brilliant cut Diamond set in
Category

Vintage 1960s Pendant Necklaces

Materials

Diamond, Emerald, 10k Gold, Sterling Silver

Louis Newman & Co GIA Certified 4.03 Carat Radiant Cut Diamond Three Stone Ring
Located in New York, NY
diamond. We then sit it in a handmade platinum three stone ring with 2 epaulet cut diamonds weighing 0.83
Category

2010s American Three-Stone Rings

Materials

Diamond, White Diamond, Platinum

Vintage 12 Carat Blue Aquamarine and Diamond Cocktail Ring 14k Yellow Gold
Located in beverly hills, CA
aquamarine at the center, surrounded by 10 marquise cut diamonds and 12 round brilliant cut diamonds
Category

Mid-20th Century Retro Cocktail Rings

Materials

Diamond, Aquamarine, 14k Gold, Yellow Gold

14K Yellow Gold Princess Cut Diamond 1.62 Carat Tsavorite Garnet Engagement Ring
Located in Los Angeles, CA
Gold, .583 Stones- Genuine Oval Tsavorite Garnet 1.62 Carats, 24 Princess Cut Diamonds, G-H color VS2
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

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

Necklace 14 carat gold toi&moi with rose cut diamonds with 0.24 carat 1950S
Located in Heemstede, NL
cut diamonds with a carat of about 0, 12 each. The 14 carat yellow golden necklace has a length of
Category

Vintage 1950s European Pendant Necklaces

Materials

Diamond, Gold

Antique 4.61 Carat Old Cut Diamond Three-Stone 18 Carat Gold Engagement Ring
Located in London, GB
cushion shaped Old Mine Cut diamond in the centre which weighs 2.50ct and is mounted in a 12 claw open
Category

Early 20th Century English Late Victorian Three-Stone Rings

Materials

Diamond, Gold, 18k Gold, White Gold, Yellow Gold

1.09 Carat Natural, Light Yellow VS-2 Heart-Cut Diamond Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a 1.09 Carat, Light Yellow, VS-2, Heart-Cut Diamond set in Platinum
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Platinum

11.89 Carat Emerald Cut Diamond I/VS1 GIA Platinum Engagement Ring
Located in New York, NY
everyone speechless! Almost 12 carats (11.89ct to be exact) of pure brilliance this is an emerald cut
Category

20th Century American Modern Engagement Rings

Materials

Diamond, Platinum

1.14 Carat Pear-Cut Aquamarine Diamond Accents 14K White Gold Earring
Located in New York, NY
Earring. This Earring is made up of Pear-cut (2 pcs) 1.14 carat Aquamarine and Round-cut White Diamond (12
Category

20th Century Chinese Art Deco Stud Earrings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

9 Carat Aquamarine 30 Diamond Ring 18 Karat Gold Fancy Beveled Checkerboard Cut
Located in New York, NY
A spectacular Ring with a 9.0 Carat Fancy Beveled Checkerboard Cut Aquamarine surrounded by 30
Category

Mid-20th Century Unknown Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, Gold, White Gold, 18k Gold

5.03 Carat Oval Peridot Pendant with Round Cut Diamond Halo in 18K White Gold
By Gad & Co.
Located in Miami, FL
, radiating a green hue. Paired with 1.74 carats total of round-cut eye-clean diamonds. The center stone is
Category

2010s North American Art Deco Pendant Necklaces

Materials

Diamond, Peridot, 18k Gold, White Gold

Harakh 1.00 Carat Rose and Brilliant Cut Natural Diamond Stud Earrings
By Harakh
Located in New York, NY
with 4 round, 4 baguette, 2 pear, 4 rose cut round, 2 rose cut marquise diamonds. All the diamonds are
Category

2010s Indian Contemporary Stud Earrings

Materials

Diamond, 18k Gold, White Gold

12 Carat Certified Natural Burma No Heat Ruby Diamond Platinum Three-Stone Ring
Located in New York, NY
two tapered trapezoid shape step-cut diamonds, set in Platinum. The ruby accompanies a gemological
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Ruby, Platinum

2.84 Carat Garnet & Diamond Yellow Gold Ring
Located in Great Neck, NY
sophistication to any outfit. This ring features a 2.84 Carat Mixed Cut Garnet (12 x 9 MM), with a Diamond Halo
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Garnet, 14k Gold, Yellow Gold

2.03 Carat Citrine & Diamond Yellow Gold Ring
Located in Great Neck, NY
and sophistication to any outfit. This ring features a 2.03 Carat Mixed Cut Citrine (12 x 9 MM
Category

21st Century and Contemporary Fashion Rings

Materials

Citrine, Diamond, 14k Gold, Yellow Gold

Pre-loved ring made of 18 carat gold with sapphire surrounded with 12 diamonds
Located in Heemstede, NL
Fabulous 18 carat yellow golden vintage ring with blue sapphire surrounded with 12 brilliant cut
Category

Mid-20th Century European Engagement Rings

Materials

Diamond, Sapphire, Gold

1.97 Carat Amethyst & Diamond Yellow Gold Ring
Located in Great Neck, NY
and sophistication to any outfit. This ring features a 1.97 Carat Mixed Cut Purple Amethyst (12 x 9
Category

21st Century and Contemporary Fashion Rings

Materials

Amethyst, Diamond, Yellow Gold, 14k Gold

1.97 Carat Amethyst & Diamond Rose Gold Ring
Located in Great Neck, NY
and sophistication to any outfit. This ring features a 1.97 Carat Mixed Cut Pink Amethyst (12 x 9 MM
Category

21st Century and Contemporary Fashion Rings

Materials

Amethyst, Diamond, 14k Gold, Rose Gold

1.56 Carat Onyx & Diamond White Gold Ring
Located in Great Neck, NY
sophistication to any outfit. This ring features a 1.56 Carat Onyx (12 x 9 MM), with a Diamond Halo comprised
Category

21st Century and Contemporary Fashion Rings

Materials

Onyx, Diamond, 14k Gold, White Gold

2.41 Carat Peridot & Diamond Yellow Gold Ring
Located in Great Neck, NY
and sophistication to any outfit. This ring features a 2.41 Carat Peridot (12 x 9 MM), with a
Category

21st Century and Contemporary Fashion Rings

Materials

Peridot, Diamond, 14k Gold, Yellow Gold

1.56 Carat Onyx & Diamond Yellow Gold Ring
Located in Great Neck, NY
sophistication to any outfit. This ring features a 1.56 Carat Onyx (12 x 9 MM), with a Diamond Halo comprised
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

2.68 Carat White Topaz & Diamond White Gold Ring
Located in Great Neck, NY
a Diamond Halo comprised of 0.08 Carats of Single Cut Round White Diamonds. This ring is set in 14K
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Topaz, 14k Gold, White Gold

1.00 Carat Smokey Quartz & Diamond Rose Gold Ring
Located in Great Neck, NY
), with a Diamond Halo comprised of 0.08 Carats of Single Cut Round White Diamonds. This ring is set in
Category

21st Century and Contemporary Fashion Rings

Materials

Quartz, Diamond, 14k Gold, Rose Gold

1.00 Carat Smokey Quartz & Diamond Yellow Gold Ring
Located in Great Neck, NY
), with a Diamond Halo comprised of 0.08 Carats of Single Cut Round White Diamonds. This ring is set in
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Quartz, Yellow Gold, 14k Gold

3.05 Carat Diamond and Palladium Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning and impressive antique and vintage 3.05 carat diamond and palladium dress / cocktail
Category

Antique Early 1900s Unknown Cocktail Rings

Materials

Diamond, Palladium

2.69 Carat Blue Topaz & Diamond White Gold Ring
Located in Great Neck, NY
and sophistication to any outfit. This ring features a 2.69 Carat Blue Topaz (12 x 9 MM), with a
Category

21st Century and Contemporary Fashion Rings

Materials

Blue Topaz, Diamond, 14k Gold, White Gold

Snake Ring with Emerald and Drop Cut Diamonds, Total Carat Weight Ct 2.50
Located in Rome, IT
Snake-shaped ring, with 12 emerald-cut diamonds and 2 pear-cut diamonds, for a total weight of ct
Category

21st Century and Contemporary Italian Modern Cocktail Rings

Materials

Diamond, 18k Gold, White Gold

1.33 Carat Oval Cut Ruby and Diamond Engagement Ring in 18K White Gold
Located in NEW YORK, NY
surrounded by 12 brilliant-cut diamonds followed by 2 baguette diamonds in 18k white gold. Accent diamonds
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

1.33 Carat Oval Cut Ruby and Diamond Engagement Ring in 18K White Gold
Located in NEW YORK, NY
surrounded by 12 brilliant-cut diamonds followed by 2 baguette diamonds in 18k white gold. Accent diamonds
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

7.25 Carat No Heat Oval Cut Blue Sapphire Ring With Pink Diamond Side Stones
By Gad & Co.
Located in Miami, FL
Diamonds - Carat: 0.88 CTTW - Cut: Round - Quantity: 12 - Measurements: 3mm
Category

2010s Sri Lankan Art Deco Cocktail Rings

Materials

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

Edwardian 14 Karat Gold Pearl 0.10 Carat Rose Cut Diamond Openwork Cocktail Ring
Located in Vilnius, LT
cultured pearl and 12 rose cut diamonds (TW 0.10ct, W-STW, SI-P2). Weight: 4.24g Size: 17 (US 6.75
Category

Early 20th Century Edwardian Cocktail Rings

Materials

Diamond, Pearl, Gold, 14k Gold

Art Deco Style 0.90 Carat White Old European Cut Diamond Yellow Gold Band Ring
By Luigi Ferrara
Located in Naples, IT
White Old European Cut Diamonds. This Ring is inspired by Art Deco. Size ITA: 12 1/2 USA: 6 1/4 We're
Category

Mid-20th Century Italian Art Deco Band Rings

Materials

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

2.65 Carat Oval Cut Ruby Diamond Engagement Ring in 18 Karat Yellow Gold
By VR Jewels
Located in Houston, TX
> Gemstone size - 16 x 12 mm > Diamond weight - 0.67 ct > Diamond Size - 2 mm > Diamond pcs - 14 > Gross
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

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

2.69 Carat Swiss Blue Topaz & Diamond White Gold Ring
Located in Great Neck, NY
), with a Diamond Halo comprised of 0.08 Carats of Single Cut Round White Diamonds. This ring is set in
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Blue Topaz, 14k Gold, White Gold

Art Deco Platinum 6.0 Carat Old Euro and Mine Cut Diamond Filigree Brooch Pin
Located in Montclair, NJ
- Old European Cut - Bead Set - K Color - SI1 Clarity - 1.58ct (approx.) (2) Natural Genuine Diamonds
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Platinum

9.69ct Cushion Cut Green Emerald & Diamond Drop Earrings
Located in New York, NY
• 18KT White Gold • 9.96 Carats • Sold as a pair • Number of Cushion Emeralds: 2 • Carat Weight
Category

2010s American Contemporary Drop Earrings

Materials

Diamond, Emerald, 18k Gold, White Gold

2 Carat Round Cut Blue Sapphire and Diamond Hoop Earrings in 14K White Gold
Located in NEW YORK, NY
Sapphires weigh 2 carats in total. A beautiful piece of jewelry. All diamonds are GH color SI1 Clarity
Category

21st Century and Contemporary Modern Hoop Earrings

Materials

Blue Sapphire, Diamond, 14k Gold, White Gold

24 Carat Briolette Sapphire Diamond Yellow Gold Dangle Earrings
Located in Stamford, CT
Deep blue sapphire and diamond dangle earrings. 2 rich blue briolette sapphires totaling 24.00cts
Category

21st Century and Contemporary Dangle Earrings

Materials

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

Art Deco 3 Carat Old Mine Cut Double Diamond and Platinum Ring Circa 1930's
By H & H Jewels
Located in Miami, FL
Diamonds (2) Details: ✔ Diamond Weight: 3 carats (1.50 carats each) ✔ Diamond Color: G-H ✔ Diamond Cut
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, Platinum

2.22 Carat Morganite Cushion Cut and Pink Sapphire Round Cut 14K Rose Gold Ring
Located in New York, NY
: One prong-set Cushion-cut Genuine morganite measures 7 mm wide x 9 mm long Gemstone weight: 2 carats
Category

20th Century Chinese Art Deco Bridal Rings

Materials

Diamond, Morganite, Pink Sapphire, 14k Gold, Rose Gold

Art Deco Platinum & Diamond Encrusted Pin/Fur Clips 12 CT / VS Quality Estate
Located in New York, NY
in total weight), These 2 center diamonds are old Mine Cuts and there are 4 baguettes. The back of
Category

Vintage 1960s Brooches

Materials

Diamond, Platinum

Exquisite 2.53-carat Heart Brilliant Natural Diamond Ring
Located in רמת גן, IL
This exquisite ring features a dazzling 2.53-carat heart brilliant natural diamond as its
Category

2010s Israeli Solitaire Rings

Materials

Diamond, White Gold

2 Carat Diamond Leaf-Fishbone Drop Flexible Earring
By Iris Fine Jewelry
Located in New York, NY
Introducing our stunning 2 Carat Diamond Leaf-Fishbone Drop Flexible Earring, a true embodiment of
Category

2010s American Drop Earrings

Materials

Diamond, Yellow Gold

Vintage 18 Karat Gold 1.80 Carat Sapphire 0.65 Carat Diamond Cluster Ring
Located in Vilnius, LT
sapphire (cushion cut, 1.80ct, B 8/3, VS) - 12 diamonds (round brilliant cut, TW 0.65ct, RW-W, VS-SI
Category

Late 20th Century Cluster Rings

Materials

Diamond, Sapphire, Gold, 18k Gold

0.60 Carat Faint Pink Diamond Earrings GIA Certified
Located in Kowloon, HK
certified Diamond 2- ➛ Stone Shape: Heart ➛ Stone Color: Faint Pink ➛ Stone Clarity: SI1 ➛ Stone Weight
Category

2010s Asian Dangle Earrings

Materials

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

Vintage 18 Karat Gold 5.50 Carat Topaz 0.50 Carat Diamond Cluster Ring
Located in Vilnius, LT
topaz (oval cut, 5.50ct, gB 4/2, VVS) - 12 diamonds (round brilliant cut, TW 0.50ct, RW-W, VS-SI
Category

Late 20th Century Modern Cluster Rings

Materials

Diamond, Topaz, Gold, 18k Gold

0.70 Carat Faint Pink Diamond Earrings GIA Certified
Located in Kowloon, HK
: 0.32 carats ➛ GIA certified ♦ SIDE STONE DETAILS ➛ Side pear diamonds - 12 pcs - 0.398 cts ➛ Side
Category

2010s Asian Stud Earrings

Materials

Diamond, Pink Diamond, 18k Gold, White Gold

Natural Rubellites 3.16 Carats set in 14K White Gold Earrings with Diamonds
Located in Los Angeles, CA
2 Total Weight 3.16 carats Color Purplish Red Color intensity Vivid Shape Pear Clarity Eye Clean Cut
Category

21st Century and Contemporary Unknown Drop Earrings

Materials

Diamond, 14k Gold, White Gold

Emerald Cut Diamond Platinum Wedding Band Ring
Located in Bay Harbor Islands, FL
This modern crisp design features a single .16 carat emerald cut diamond set in platinum. Ring
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

Vintage 18 Karat Gold 1.00 Carat Emerald 1.25 Carat Diamond Wide Band Ring
Located in Vilnius, LT
emeralds (square emerald cut, TW 1.00ct, vslbG 5/5, SI) - 12 diamonds (princess cut, TW 1.25ct, RW-W, VS-SI
Category

Late 20th Century Modern Band Rings

Materials

Diamond, Emerald, Gold, 18k Gold

5.37 Carat Aquamarine Diamond White Gold Cocktail Ring
By DGI
Located in Los Angeles, CA
This ring has a beautiful 3.42 Carat Oval Cut Aquamarine and is surrounded by 100 Round Cut
Category

2010s American Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

3.75 Carat Pear Shaped Diamond Platinum Dangle Drop Earrings
Located in Stamford, CT
Diamond dangle drop earrings. 2 brilliant round cut beaded bezel set diamonds, 1.37cts total. Each
Category

Late 20th Century Dangle Earrings

Materials

Diamond, Platinum

  • 1
  • ...
Get Updated with New Arrivals
Save "2 A Cut 12 Carat Diamond", and we’ll notify you when there are new listings in this category.

2a Cut 12 Carat Diamond For Sale on 1stDibs

You are likely to find exactly the 2a cut 12 carat diamond 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. Find an antique version now, or shop for 797 vintage or 561 modern creation for a more contemporary example of these cherished accessories. Finding the perfect 2a cut 12 carat diamond 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. Finding an appealing 2a cut 12 carat diamond — no matter the origin — is easy, but Oshi Jewels, Cartier and Tiffany & Co. each produced a popular version that is worth a look. A round cut version of this piece has appeal, but there are also oval cut and brilliant cut versions for sale. When shopping for a 2a cut 12 carat diamond, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 2a Cut 12 Carat Diamond?

On average, a 2a cut 12 carat diamond at 1stDibs sells for $3,990, while they’re typically $1 on the low end and $945,000 for the highest priced versions of this item.
Questions About 2a Cut 12 Carat Diamond
  • 1stDibs ExpertNovember 8, 2023
    How big a 2-carat diamond with a princess cut is varies from piece to piece. However, the average size is 7 millimeters by 7 millimeters. The measurement is around 9/32 inches, so a 2-carat princess-cut diamond will be just a little over a quarter-inch in size. On 1stDibs, find an assortment of princess-cut diamond jewelry.