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12 Diamonds

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1 carat emerald and 12 diamonds ring from 1920
Located in PARIS, FR
Stones: 1 carat emerald and 12 diamonds: 0.44ct Material: Platinum Dimensions: Diameter of 12mm
Category

Vintage 1920s Art Deco Wedding Rings

Materials

Diamond, Emerald, Platinum

Marquis Ring with Sapphire and 12 Diamonds, circa 1920
Located in Berlin, DE
Marquis ring with sapphire and 12 diamonds, around 1920 18 carat gold, 925 silver France, probably
Category

Early 20th Century French Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, 18k Gold, Silver

Luxurious 18 Karat White Gold Ring with Large Emerald and 12 Diamonds
Located in Berlin, DE
Luxurious 18 Karat white gold ring with large emerald and 12 diamonds The diamonds are of very
Category

20th Century Solitaire Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold, White Gold

Tag Heuer Formula 1 sparkling diamond wristwatch. 12 diamonds 0.9ct. Paperwork
By TAG Heuer
Located in Canterbury, GB
bracelet, all in ceramic and stainless steel, with its dial factory set with 12 diamonds of 0.9 carat and I
Category

2010s Wrist Watches

Diamond Vintage weding band 14KT gold 12 diamonds ring handfinished
Located in Boca Raton, FL
Beautiful simple diamond ring made with 12 diamonds in 14KT yellow gold, hand finished with tiny
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Gold, 14k Gold

Ring Wrap Enhancer, Estate Diamond Wedding Band, 12 Diamond Wrap Yellow Gold
Located in Austin, TX
Diamond Number: 12 Diamond Total Weight: .09 carat Diamond Shape: Round Diamond Clarity: VS2 (excellent
Category

2010s American Contemporary Wedding Rings

Materials

Diamond, 14k Gold, Yellow Gold

3.78 Carat Round Brilliant 12 Diamond 3/4 Wedding Band 14 Karat In Stock
Located in Boca Raton, FL
14k White Gold 3.78ctw Round Brilliant 12 Diamond 3/4 Wedding Band Style: Women's Round Brilliant
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Gold, 14k Gold, White Gold

Oval Locket Pendant 18k Yellow Gold Blue Vitreous Enamel 12 Diamonds 0.08 ct GVS
By Victor Mayer
Located in Pforzheim, DE
, translucent peacock blue vitreous enamel, gold paillons, 12 diamonds, total 0.08 ct, G VS, brilliant cut
Category

21st Century and Contemporary German Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold, Enamel

Round Locket Pendant - 18k Yellow Gold - Blue Enamel - 12 Diamonds 0.19 ct GVS
By Victor Mayer
Located in Pforzheim, DE
vitreous enamel, 12 diamonds, total 0.19 ct G VS, brilliant cut About the creator Victor Mayer Victor
Category

2010s German Art Nouveau Pendant Necklaces

Materials

Diamond, Yellow Gold, Enamel, 18k Gold

Oval Locket Pendant Necklace 18k Yellow Gold Blue Enamel 12 Diamonds 0.08 ct GVS
By Victor Mayer
Located in Pforzheim, DE
, translucent peacock blue vitreous enamel, gold paillons, 12 diamonds, total 0.08 ct, G VS, brilliant cut
Category

21st Century and Contemporary German Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold, Enamel

Round Locket Pendant Necklace 18k White Gold Purple Enamel 12 Diamonds 0.19 ct
By Victor Mayer
Located in Pforzheim, DE
vitreous enamel, 12 diamonds, total 0.19 ct G VS, brilliant cut About the creator Victor Mayer Victor
Category

21st Century and Contemporary German Art Deco Pendant Necklaces

Materials

Diamond, 18k Gold, Enamel, White Gold

Rose Gold Contemporary Peony Petal Brooch with 12 Diamonds
By Polya Medvedeva Jewellery
Located in Berlin, DE
This contemporary Peony Petal brooch is in 18 karat rose gold with 12 round natural diamonds, 0,15
Category

21st Century and Contemporary German Contemporary Brooches

Materials

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

Art Deco 14k White Gold Victorian 12 Diamonds Cocktail Ring for Women Size 5.75
Located in Jacksonville, FL
piece, meticulously crafted with 14k white gold and adorned with 12 dazzling diamonds. The charm of
Category

Antique 19th Century Victorian Cocktail Rings

Materials

Diamond, 14k Gold, White Gold

Round Locket Pendant 18k White Gold Purple Vitreous Enamel 12 Diamonds 0.19 ct
By Victor Mayer
Located in Pforzheim, DE
vitreous enamel, 12 diamonds, total 0.19 ct G VS, brilliant cut About the creator Victor Mayer Victor
Category

21st Century and Contemporary German Art Deco Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold, Enamel

18 Karat White Gold Contemporary Peony Petal Brooch with 12 Diamonds
By Polya Medvedeva Jewellery
Located in Berlin, DE
This contemporary Peony Petal brooch is in 18 karat white gold with 12 round natural diamonds, 0,15
Category

21st Century and Contemporary German Contemporary Brooches

Materials

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

18 Karat Yellow Gold Contemporary Peony Petal Brooch with 12 Diamonds
By Polya Medvedeva Jewellery
Located in Berlin, DE
This contemporary Peony Petal brooch is in 18 karat yellow gold with 12 round natural diamonds
Category

21st Century and Contemporary German Contemporary Brooches

Materials

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

Brilliant Cut 0.90 Carats Diamond 'GIA Cert' and 12 Diamonds Engagement Ring
Located in MELBOURNE, VIC
Hand made 18 carat White Gold Engagement Ring Claw set with one Round Brilliant Cut diamond, Weight
Category

2010s Australian Contemporary Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Classic Oval Sapphire Ring Surrounded by 12 Diamonds in 9ct White Gold
Located in London, GB
Introducing the epitome of timeless elegance - our classic oval sapphire ring surrounded by 12
Category

2010s Cluster Rings

Materials

Diamond, Sapphire, White Gold

Aquamarine Diamond Halo Ring, 14 Karat White Gold, 1.29 Carat Aqua .12 Diamond
By Five Star Jewelry
Located in Austin, TX
Gold Diamond Carat Weight: .12 Carats Diamond Shape: Round Diamond Clarity: VS2 (Excellent, Eye Clean
Category

2010s American Modern Fashion Rings

Materials

Diamond, Aquamarine, White Gold, Gold, 14k Gold

Emerald Cut 1.20 carat D VVS2 GIA Platinum Ring with 12 Diamonds 0.42 carat
Located in Miami, FL
Diamond Emerald Cut VVS2 clarity Stone and 12 amazing round diamonds (0.42 carats) to complement. This
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Emerald, Platinum

House of RAVN, 18k Gold, Old World Arpeggio Eternity Ring with 12 Diamonds, 2ct
Located in Los Angeles, CA
18k yellow gold, eternity band ring, with 12 round diamonds in bezel setting, with milligrain
Category

2010s American Contemporary Band Rings

Materials

Diamond, 18k 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

18-carat yellow gold necklace with a pendant 12 diamonds of 0.12 carats in total
Located in Monte-Carlo, MC
gold decorated with 12 brilliant round cut diamonds of 0.01 carats each, or 0.12 carats in total. Very
Category

20th Century Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

14kt Yellow Gold ~ 2 Sapphire Blue Marquise Stones 12 Diamonds Ring Size 6 1/2
Located in Las Vegas, NV
14kt Yellow Gold ~ 2 Sapphire Blue Marquise Stones 12 round Diamond Ring Size 6 1/2 Marquise
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Sapphire, Yellow Gold

Pink Sapphire Diamond South Sea Pearl Earrings 1.41 Carat 18 Karat Rose Gold
By Harbor Diamonds
Located in New York, NY
diamonds weighing 0.34 carats with two South Sea Pearls measuring 12-13 mm.
Category

2010s American Contemporary Drop Earrings

Materials

Diamond, South Sea Pearl, Pink Sapphire, Rose Gold

14 Karat White Gold Ring set with a large Sapphire and 12 white Diamonds.
Located in Berlin, DE
Beautiful white gold ring set with a large sapphire and 12 diamonds. 14k gold. Including
Category

20th Century Cluster Rings

Materials

White Diamond, Sapphire, 14k Gold, White Gold

Diamond Pendant Necklace
Located in Geneva, CH
Pendant in 18kt white gold set with 12 diamonds 0.29 cts and 11 baguette cut diamonds 0.86 cts 
Category

21st Century and Contemporary Swiss Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Diamond Pendant Necklace
Located in Geneva, CH
Pendant in 18kt white gold set with 12 diamonds 0.20 cts and 9 baguette cut diamonds 0.28 cts           
Category

21st Century and Contemporary Swiss Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Emerald Cut Diamond Eternity Band GIA Certified 18.51 Carat
By Diamond Scene New York
Located in New York, NY
diamond eternity band featuring 12 Emerald Cut diamonds each with its own GIA certificate. The 12 diamonds
Category

21st Century and Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

Emerald Diamond Ring in White Gold
Located in Berlin, DE
Emerald Diamond Ring In 18k White Gold with 12 Diamonds and one Emerald
Category

1990s Unknown Cluster Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Diamond By The Yards Necklace with Paper-Clip Chain - Natural Diamonds - 14k WG
Located in Great Neck, NY
Gold 12 Diamonds, 1.00 Total Carat Weight
Category

2010s American Chain Necklaces

Materials

Diamond, 14k Gold, White Gold

8, 45 carats Cabochon tourmaline and diamonds ring
Located in PARIS, FR
Stones: 1 tourmaline of 8.45cts, 12 diamonds: 0.29ct Material: White gold Dimensions: 1.4cm Weight
Category

Early 2000s Fashion Rings

Materials

Diamond, Tourmaline, White Gold

Alex Spkus 'Open Ovals' Ball Pendant with Diamonds on 18'' Chain, 18K Yellow Gol
By Alex Sepkus
Located in Dallas, TX
18K Yellow Gold and Diamond 'Open Ovals' Ball Pendant The pendant features 12 diamonds 0.36ctw on
Category

2010s American Pendant Necklaces

Materials

Diamond, 18k Gold

2.25 Carat Natural Diamond Earrings
Located in Miami, FL
create a flower shape 12 diamond stones in total 14k white gold ESTATE Made in Miami
Category

2010s North American Art Deco Stud Earrings

Materials

Diamond, 14k Gold, White Gold

18ct White Gold Multi Banded Diamond Ring
Located in Cape Town, ZA
Size: O ½ Stone Attributes Number of Stones: 12 Diamonds Cut
Category

21st Century and Contemporary Band Rings

Materials

Diamond, White Gold

Diamond Huggies Earrings Round Brilliant Cut 0.5 Carats 14K White Gold
Located in Laguna Niguel, CA
It comes with the Gemological Appraisal by GIA GG/AJP All diamonds are natural, not treated 12
Category

21st Century and Contemporary Contemporary Hoop Earrings

Materials

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

Diamond Ring in 18 Karat Yellow Gold
Located in Bad Kissingen, DE
18 k yellow gold Hallmarked with the fineness "750". 1 diamond brilliant cut 0,51 ct 12 diamonds
Category

21st Century and Contemporary German Wedding Rings

Materials

Diamond, 18k Gold, Yellow Gold

French Vintage Diamond Yellow Gold 18K Bracelet 1960S
Located in Geneva, CH
Vintage Diamond Yellow Gold 18K Bracelet. Circa 1960. set with 5 diamonds and 12 diamonds. Length
Category

Vintage 1960s European Retro Retro Bracelets

Materials

Diamond, 18k Gold, Yellow Gold

Diamonds ring in 18k white gold
Located in PARIS, FR
Stones: Central diamond: 0.50 ct, 12 diamonds: 0.30 ct and 2 baguette diamonds: 0.14 ct Material
Category

Early 2000s Wedding Rings

Materials

Diamond, White Gold

London Blue Topaz Ring Diamond Halo 3.89 Carats
Located in Laguna Niguel, CA
= 3.80 Carat 12 Diamonds = 0.09 Carats Metal: Rhodium Plated Sterling Silver Ring Size: 7* US *It can be
Category

21st Century and Contemporary Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Topaz, Blue Topaz, Silver, Sterling Silver

Natural Ruby Ring With Diamonds 14K Yellow Gold
Located in Laguna Niguel, CA
12 Diamonds = 0.10 Carats Metal: 14K Yellow Gold Ring Size: 7* US *It can be resized complimentary
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

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

Ring Yellow Gold Diamond
Located in PARIS, FR
Half alliance diamonds. in yellow gold 750 thousandths (18 carats). set with 12 diamonds. brilliant
Category

20th Century French Engagement Rings

Materials

Diamond, Yellow Gold

Mira Ruby & Diamond Ring in 18k Yellow Gold by Elie Top
By Elie Top
Located in Paris, France
: Ruby: 0.30 cts 12 Diamonds: 0.15 cts 18k Gold: 5 g Distressed Silver: 1.5 g Made in France
Category

21st Century and Contemporary French Neoclassical More Rings

Materials

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

1940s Cameo and Diamond 14 Karat Gold Convertible Brooch and Pendant
Located in Atlanta, GA
. Cameo is set in a shining 14 Karat Yellow Gold circular frame set with 12 Diamond accents Back has a c
Category

Mid-20th Century Unknown Retro Brooches

Materials

Diamond, 14k Gold, Yellow Gold

Zambian Emerald Cocktail Ring Diamond Setting 1.70 Carats 14K Yellow Gold
Located in Laguna Niguel, CA
= 1.60 Carat Cut = Oval 12 Diamonds = 0.10 Carats Metal: 14K Yellow Gold Ring Size: 7* US *It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

Aquamarine Ring With Tanzanites and Diamonds 2.25 Carats 10K White Gold
Located in Laguna Niguel, CA
Carat 12 Tanzanites = 0.42 Carats 12 Diamonds = 0.06 Carats Metal: 10K White Gold Ring Size: 8* US *It
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, Tanzanite, White Diamond, Aquamarine, White Gold, 10k Gold, Gold

Amethyst Diamond Band Ring 18k Yellow Gold
Located in Honolulu, HI
Ring Specifications: Metal: 18k Yellow Gold Total Weight: 6.5 Grams Diamond Count: 12 Diamond
Category

Late 20th Century Unknown Modern Cocktail Rings

Materials

Diamond, Amethyst, Yellow Gold, 18k Gold

Mira Sapphire & Diamond Ring in 18k White Gold by Elie Top
By Elie Top
Located in Paris, France
. Details: Sapphire: 0.30 cts, ø 4mm 12 Diamonds: 0.15 cts 18k White Gold: 5 g Distressed Silver: 1.5 g Made
Category

21st Century and Contemporary French Neoclassical Engagement Rings

Materials

Blue Sapphire, Diamond, White Gold, Silver

Mira Diamond Pendant in 18k Yellow Gold by Elie Top
By Elie Top
Located in Paris, France
. Sold with chain. Details: Central Diamond: 0.25 cts 12 Diamonds: 0.15 cts 18k Gold: 6.65 g with chain
Category

21st Century and Contemporary French Neoclassical Pendant Necklaces

Materials

Diamond, 18k Gold, Silver, Yellow Gold

Marina B "Pharaon Jasmine" Diamond and Enamel Ring
By Marina B
Located in San Antonio, TX
5.39cts and the 12 diamonds are approximately 3.13cts.
Category

Vintage 1980s French More Rings

Materials

Diamond, 18k Gold, Enamel

Carrera y Carrera Ecuestre Openwork 18k Yellow Gold and Diamonds Ring, 10076519
By Carrera y Carrera
Located in North Miami Beach, FL
This ring is made of 18K Yellow Gold. The handmade horse-shaped figure in the middle with 12
Category

21st Century and Contemporary Band Rings

Materials

Yellow Gold

0.62 Carat Round Cut Emerald and Diamond Fashion Ring in 18k White Gold
Located in NEW YORK, NY
of brilliant-cut 12 diamonds weighing 0.62 carats in total. Made in 18k white gold.
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

ADAGIO Ring in White Gold with Diamonds
Located in BARCELONA, ES
ADAGIO Ring for woman : 12 Diamonds in Brilliant cut with a total weight of 0,48 cts. in quality G
Category

21st Century and Contemporary European Cluster Rings

Van Cleef & Arpels Diamond 18 Karat Gold Large Magnolia Earrings
By Van Cleef & Arpels
Located in Bethesda, MD
Karat Yellow Gold • Circa: 1980s • Gemstone: 12 Diamonds=.85 carats • Weight: 22.6 grams • Dimensions
Category

Vintage 1980s French Clip-on Earrings

Materials

Diamond, Gold

18ct Yellow Gold, 3.01ct I/VS2 Rectangular Diamond Gia Certified
Located in London, GB
set with 12 diamonds on the shoulders totaling 0.30ct. This ring is elegant and beautiful and will
Category

2010s British Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold

Diamond Whitegold Mens Ring
Located in AMSTERDAM, NL
This 18 carat white gold mens ring is set with 12 diamonds of 0.08 ct. The ring size can be
Category

Mid-20th Century Cluster Rings

Materials

Diamond, 18k Gold

14k White Gold Emerald Cut Emerald and Diamond Cluster Ring
Located in Los Angeles, CA
Weight: 3.7 Gr Main Stone: Emerald Cut Emerald .92cts. Side Stones: 12 Diamonds Weight
Category

Late 20th Century American Contemporary Cocktail Rings

Materials

Diamond, Emerald, 14k Gold, White Gold

.45ct Natural Diamonds Bracelet 14kt Edwardian Deco Frame
Located in New York, NY
-2 si1 clarity. 14 karat yellow gold 30 grams 12 Diamond Count Bracelet measures 12mm wide
Category

2010s American Link Bracelets

Materials

Diamond, 14k Gold, Yellow Gold

Dimos 18k Gold Noir Byzantine Diamonds Cross
Located in Athens, GR
Noir cross in 18 karat yellow gold decorated with granulation and filigrees. The 12 diamonds
Category

Antique 16th Century Greek Byzantine Pendant Necklaces

Materials

Diamond, 18k Gold

Dimos 18k Gold Noir Byzantine Diamonds Cross
Dimos 18k Gold Noir Byzantine Diamonds Cross
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H 1.772 in W 0.984 in
Chopard Monte Carlo Gold Diamond Watch MC1990
By Chopard
Located in New York, NY
18k yellow gold Monte Carlo watch by Chopard, set with diamond bezel and 12 diamond markers . Dark
Category

20th Century Swiss Wrist Watches

Materials

Diamond, Gold

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12 Diamonds For Sale on 1stDibs

Browse a vast assortment of 12 diamonds for sale on 1stDibs. Frequently made of gold, 18k gold and white gold, these items were constructed with great care. Our selection of items includes 12623 vintage examples as well as 18555 contemporary versions. Our collection is diverse and broad-ranging, and pieces in stock date back to the 18th Century while others were produced as recently as the 21st Century. There are many different pieces in our collection of 12 diamonds to choose from, but contemporary and modern 12 diamonds are of considerable interest. Cartier, Rolex and Tiffany & Co. each produced beautiful examples of these items that are worth considering. While most can agree that any pick from our collection easily elevates most outfits, but the choice of diamond versions from the 23439 available is guaranteed to add a special touch to your ensemble. There are many round cut, oval cut and brilliant cut 12 diamonds for sale. When shopping our range of 12 diamonds, you’ll find that there are less available pieces for men today than there are for women.

How Much are 12 Diamonds?

Prices for 12 diamonds start at $1 and top out at $5,000,000 with these rings, on average, selling for $4,319.
Questions About 12 Diamonds
  • 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.