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Antique Victorian 2.92ct Sapphire and 0.72ct Diamond 12ct Yellow Gold Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique Victorian 0.72 carat diamond and 2.92 carat sapphire, 12
Category

Antique 19th Century Victorian Brooches

Materials

Sapphire, Diamond, Yellow Gold

Silver and 24k Gold Bangle with Ruby and Diamond
By Emre Osmanlar
Located in ISTANBUL, TR
Silver 925 30 g 24 Karat Gold 6 g 5.50 ct Champagne Diamond 2.70 ct Diamond 12
Category

2010s Turkish Contemporary Bangles

Materials

Diamond, Brown Diamond, Ruby, Gold, Silver

.32 Carat Mens Natural Round Diamond Solitaire Ring 14 Karat
Located in New York, NY
clarity G-color Ring Width: 7mm diameter Natural, Earth Mined. Side Diamonds: .12ct G-color Si-2
Category

2010s American Solitaire Rings

Materials

Diamond, 14k Gold, Yellow Gold

.67 Carat Natural Round Diamonds Vintage Raised Deck Ring 14 Karat
Located in New York, NY
.55ct. Natural Round brilliant diamond Si-1 clarity / G color. 5.2mm Diameter Side diamonds
Category

2010s American Solitaire Rings

Materials

Diamond, 14k Gold, White Gold

14K Yellow Gold Petite Double Bezel Diamond Stud Earrings
Located in Los Angeles, CA
Gold --2mm Diamonds; .12ct per pair --stud is approx. 4.5mm tall x 2.3mm wide --Sold as a pair
Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Yellow Gold

Extraordinary Diamonds Onyx and Yellow Gold Link Bracelet
Located in Marcianise, Marcianise (CE)
62.63 g Diamonds 12 ct Onyx 6 g Rf. hcaih For any inquiries, please contact the seller through the
Category

Late 20th Century Italian Contemporary Link Bracelets

Materials

Diamond, Onyx, 18k Gold, Yellow Gold

GIA 1.41 Carat Brown Yellow Cushion Diamond Gold Platinum Engagement Ring
Located in Stamford, CT
diamonds, .12ct. G, VS 4.33 x 2.47mm 16 round diamonds, approx. total weight .03cts Size 5.5 and sizable
Category

Mid-20th Century Engagement Rings

Materials

Brown Diamond, Diamond, Yellow Diamond, Gold, 18k Gold, Yellow Gold, Pla...

Suzy Levian 14K White Gold Round Blue and White Diamond Halo Engagement Ring
By Suzy Levian
Located in Great Neck, NY
(.12ct) and 57 pave-set white diamonds. Crafted with 14k white gold, this ring shimmers with a lustrous
Category

21st Century and Contemporary American Contemporary Bridal Rings

Materials

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

Leporttie Diamond Bangle Ring Earring Three-Piece Set in 18 Karat Yellow Gold
Located in New York, NY
diamonds around the hearts and Black Gold. Total Carats of Round brilliant diamonds 12 Ct. Matching
Category

1990s Bangles

Materials

Diamond, 18k Gold

Platinum Earrings with 12 Ct. Sapphires & 1.3 Ct Diamonds
Located in Antwerp, BE
, triangle cut : 12 Carats Diamonds: 22 brilliant cut diamonds together approx. 1.3 ct diamonds Material
Category

20th Century European Artisan Dangle Earrings

Materials

Diamond, Sapphire, Platinum

12ct Natural Ruby Diamonds Bracelet 14kt
Located in New York, NY
. 2ct Natural Diamonds Rounds & full cuts Vs-s clarity G-color 14kt. white Gold 21.7 Grams
Category

2010s American Tennis Bracelets

Materials

Diamond, Ruby, 14k Gold, White Gold

Vintage Opal Diamond Cocktail Ring 12 Ct Opal 4 Ct Diamond
Located in Kendal, GB
) STONES: Natural Opal (12 x 21mm, approx. 12ct), Diamonds (4 x 4mm, approx. 0.25ct each – 4ct total
Category

Vintage 1960s European Cocktail Rings

Materials

Diamond, Opal, 18k Gold, White Gold

TIFFANY & Co. Platinum .12ct Solitaire Diamond Pendant Necklace
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Platinum .12ct Solitaire Diamond Pendant Necklace Metal: Platinum Chain: 16" Pendant
Category

2010s American Pendant Necklaces

Materials

Diamond, Platinum

AIG Certified 32.00 Ct Tanzanite 15.00 Ct Emerald 12 Ct Diamonds Brooch/Pendant
Located in Massafra, IT
with a centre Natural Zambian Emerald in perfect oval cut of 15,00 carat, fine quality, and 12 pieces
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Emerald, Tanzanite, 18k Gold

Vintage Amethyst Diamond Cocktail Ring in 12ct Amethyst
Located in Kendal, GB
amethyst weighing approx. 12ct. It has a desirable, regal purple hue and glistens with many expertly cut
Category

20th Century Cocktail Rings

Materials

Amethyst, Diamond, Gold

Pomellato 12ct Lemon Quartz Champagne Diamond Drop Earrings
By Pomellato
Located in Feasterville, PA
.46ct of round brilliant cut champagne diamonds. Retail Price: $21,000+ Tax
Category

Early 2000s Drop Earrings

Materials

Diamond, Quartz, 18k Gold, Yellow Gold

Vintage 90s Diamond and 12ct White Gold Stud Earrings
Located in Jesmond, Newcastle Upon Tyne
An impressive pair of vintage 0.84 carat diamond and 12 carat white gold stud earrings; part of our
Category

1990s Unknown Stud Earrings

Materials

Diamond, White Gold

Vintage 90s Diamond and 12ct White Gold Stud Earrings
Vintage 90s Diamond and 12ct White Gold Stud Earrings
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H 0.14 in W 0.16 in L 0.3 in
12ct Natural Oval Purple Iolite Diamond Clip Earrings 18kt
Located in New York, NY
Natural Vivid Purple Iolite Earrings. 12ct natural Iolite. 4x6mm each .10ct natural round
Category

2010s American Stud Earrings

Materials

Diamond, Iolite, 18k Gold, White Gold

Four Prong 12 Ct TW Natural Diamond Tennis Bracelet
Located in Dubai, DU
Diamond. Fasten with a secure clasp. METAL DETAILS: 18K White Gold DIAMOND DETAILS: Natural, Ethically
Category

2010s Tennis Bracelets

Materials

Diamond, 18k Gold

12ct Luxury bangle bracelet 18KT gold
Located in Boca Raton, FL
. Metal Type: 18KT Natural Diamond(s): Color: F-G Cut:Square Brilliant Carat: 12ct Clarity: VS (average
Category

21st Century and Contemporary Bangles

Materials

Diamond, 18k Gold

Yellow Gold Diamond Solitaire Engagement Ring - 14k Round Brilliant .12ct
Located in Greensboro, NC
& 14k White Gold Stone Information Natural Diamond Carat(s): .12ct Cut: Round Brilliant Color: K
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold

12 Ct Natural Trillion Tanzanite & 0.50 Ct Diamond Tennis Bracelet 14 KW Gold
Located in New York, NY
trillion tanzanites weighing approximately 12 carats, it exudes elegance. Complementing the tanzanites are
Category

2010s Tennis Bracelets

Materials

Diamond, Tanzanite, 14k Gold, White Gold

18 Karat & Silver Brooch Set with 1 Diamond 1.76 Ct+12 Ruby 3.76 Ct + 48 Diamond
Located in Heerlen, NL
: 1.76 ct. VS2 /I 12 natural Ruby's mixed round cut: 3.76 ct. 48 old European Cut & Rose Cut Diamonds
Category

Antique Late 19th Century French Neoclassical Brooches

Materials

Diamond, Ruby, 18k Gold, Rose Gold, Silver

12 Ct Natural Emerald Zambia Cabochon & 4 Ct Diamond Stud Earring 14 KW Gold
Located in New York, NY
Approximately 12 Carat of Natural Zambian Emerald Cabochon and 4 Ct diamonds earrings in White
Category

2010s Stud Earrings

Materials

Diamond, Emerald, 14k Gold, White Gold

Vintage 12 Ct Natural Carved Emerald & 1.5 Ct Diamond Ring 18 Kt Yellow Gold
Located in New York, NY
approximately 12 ct with beautiful color and clarity. Accompanied by brilliant cut diamonds approximately 1.5 ct
Category

Early 2000s Solitaire Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

ct 45, 50 Blue Topaz Diamond and ct 12, 88 Sapphire Gold Ring
Located in Marcianise, Marcianise (CE)
blue topaz surrounded by a diamonds oval stripe and a crown of blue sapphire. diamonds 0.36kt topaz
Category

Late 20th Century Italian Retro Cocktail Rings

Materials

Topaz, Blue Sapphire, Diamond, Yellow Gold, White Gold, 14k Gold

ct 12, 53 Sapphire Diamond Gold and Silver Ring
Located in Marcianise, Marcianise (CE)
, embellished with diamonds on the first circle and blue sapphires and topaz in the centre. diamonds(0.73Kt
Category

Late 20th Century Italian Retro Cluster Rings

Materials

Diamond, Blue Sapphire, Topaz, 9k Gold, Silver

14k Yellow Gold Women's Chain Ring with Diamonds, Total Diamond Weight .12ct
By Gregory Mikaelian & Sons, Inc.
Located in Los Angeles, CA
14K Yellow Gold Women's Chain Ring With Diamonds, Total Diamond Weight .12 Ct. Product Features
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Diamond, Yellow Gold, Gold, 14k Gold

Hand Made Magnificent 12ct Oval Amethyst Pendant Surrounded by 15 Diamonds
By Unbranded
Located in London, GB
Hand Made Magnificent 12ct Oval Amethyst Surrounded by 15 Victorian Cut Diamonds 9ct Yellow Gold
Category

2010s British Pendant Necklaces

Materials

Amethyst, Diamond, Yellow Gold, 9k Gold

Restored Vintage Natural Diamond Petal Tulip Deco Ring .12ct 14kt gold
Located in New York, NY
.12ct Natural round Cut Diamond Ring vs-2 clarity G color. 14kt yellow gold 3.5 Grams Depth
Category

2010s American Solitaire Rings

Materials

Diamond, 14k Gold, Yellow Gold

ISSAC NUSSBAUM NEW YORK 12ct intense yellow diamond ring
By Issac Nussbaum
Located in New York, NY
Natural Fancy Intense Yellow Diamond Ring . A very rare and special Natural colored diamond ring
Category

2010s Modern Engagement Rings

Materials

Platinum

Natural 12 Ct Burma Ruby & 30 Ct Diamond Trio Pin 18 Karat Yellow Gold 78gm
Located in New York, NY
Introducing the exquisite Natural 12 Ct Burma Ruby & 30 Ct Diamond Trio Pin, a truly unique piece
Category

Vintage 1970s Choker Necklaces

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Stunning .12ct. Square Mixed Cut Cluster Sapphire Ring with Side Diamonds
Located in רמת גן, IL
Stunning .12ct. Square Mixed Cut Cluster Sapphire Ring with Side Diamonds Product Details: Metal
Category

2010s Israeli Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

NWT $44, 400 Rare 12ct Fancy Yellow Diamond White Diamond Fringe Dangle Earrings
Located in New York, NY
Yellow and White Diamond Dangle Earrings. Each Earring features Rare Gorgeous Glittering Fancy Yellow
Category

21st Century and Contemporary Drop Earrings

Materials

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

NWT $36, 000 Rare 12ct Fancy Yellow Diamond White Diamond Fringe Dangle Earrings
Located in New York, NY
Yellow and White Diamond Dangle Earrings. Each Earring features Rare Gorgeous Glittering Fancy Yellow
Category

21st Century and Contemporary Drop Earrings

Materials

Diamond, Yellow Diamond, Gold, 18k Gold

12 Ct Unheated Ceylon Sapphire Cabochon Ring with Diamonds, Paperwork Incl.
Located in New York, NY
An approximate 12 ct. Unheated Ceylon Sapphire Cabochon Ring with Diamonds with a certificate from
Category

20th Century Cluster Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Edwardian 12 MM. Natural Split Pearl 1.60 Ct Diamond Engagement Ring
Located in Napoli, IT
water ¾ split pearl of 12 mm. in diameter – 17 old mine cut diamonds totalling approx 1.60 Ct (G/H-VVS
Category

Antique Early 1900s European Edwardian Engagement Rings

Materials

Diamond, Pearl, Platinum, 18k Gold

12 Ct Natural Marquis Ruby & 0.75 Ct Diamond 18 Kt White Gold Ball Ring Size 6
Located in New York, NY
12 Ct Natural Marquis Ruby & 0.75 Ct Diamond 18 Kt White Gold Ball Ring Size 6 Introducing our
Category

2010s Solitaire Rings

Materials

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

Chantecler 12 Ct Sapphire 22 Ct Diamond VS/E-F Color Ring & Earring Set 18 KYG
By Chantecler
Located in New York, NY
Designer Chantecler From Italy 12 Ct Sapphire Cabochon And 22 Ct VS/E-F Color Diamond Ring
Category

20th Century Stud Earrings

Materials

Diamond, Blue Sapphire, Sapphire, 18k Gold

Diamond and 12ct Colombian Emeralds French Platinum Deco Bracelet Rubell Frers
Located in Aventura, FL
3 Certified Colombian emeralds Gem of 12.00 ct and 58.00 ct of gem clean white diamonds 92.1 grams
Category

21st Century and Contemporary Unknown Modernist More Bracelets

Materials

Diamond, Emerald, Platinum

Vintage Victorian Style Apx 12ct Rose Cut Diamond Drop Necklace / Brooch
Located in BEVERLY HILLS, CA
Stunning vintage rose cut diamond drop necklace, convertible to a brooch as well. Approximately 12
Category

Vintage 1930s Unknown Victorian Drop Necklaces

Materials

Diamond, Gold, Silver

Art Deco aquamarine ca.12ct bagutte cut pendant with a diamond
Located in Berlin, BE
brilliant-cut diamond, approximately 0.03 carats in size. This diamond adds a subtle touch of sparkle
Category

2010s German Art Deco Pendant Necklaces

Materials

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

Art Deco aquamarine ca.12ct bagutte cut pendant with a diamond
Art Deco aquamarine ca.12ct bagutte cut pendant with a diamond
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H 0.44 in W 0.63 in L 0.87 in
12ct Blue Sapphire Armor Ring With Tsavorite & Diamonds Made In 18k Gold
By Artisan NYC
Located in New York, NY
18KT:2.56g,D:2.25ct,SI:25.33g, SAPP:12ct,TSAV:1.08ct Size: US-7.75
Category

21st Century and Contemporary Indian Contemporary Fashion Rings

Materials

Diamond, Blue Sapphire, Tsavorite, 18k Gold, Yellow Gold

Ravishing 18k Yellow Gold Bracelet w/ 12 ct Natural Diamond IGI Certificate
Located in רמת גן, IL
A luxurious gold tennis bracelet with ideal cut round brilliant diamonds in 12-carat round
Category

2010s Israeli Tennis Bracelets

Materials

Diamond, 18k Gold, Yellow Gold

Art Deco Diamond Engagement Ring .12ct Transitional Original 1920's Antique 14K
Located in Dearborn, MI
Genuine Original Antique from 1920's Diamond Solitaire Engagement Ring .12ct Transitional Cut 14K
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

NWT $60, 000 18KT Fancy Large Gorgeous Glittering 12CT Pear Diamond Necklace
Located in New York, NY
Sparkling White Diamond Necklace. Necklace is comprised of Large Pear Shaped Diamonds adorned with Fine
Category

21st Century and Contemporary Choker Necklaces

Materials

Diamond, Gold, 18k Gold

CAROL ACKERMAN Eight .12 Ct Diamonds Surrounding Gold Carved Leaf Wedding Ring
Located in Kennebunkport, ME
CT diamonds. The polished interior displays her imprint " © CA 18K". The ring is size 6.5. Carol
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

NWT $49, 500 18KT Gold Fancy 12ct Gorgeous Yellow Orange Cognac Diamond Earrings
Located in New York, NY
Yellow and White Diamond Dangle Earrings. Each Earring features Rare Gorgeous Glittering Fancy Large
Category

21st Century and Contemporary Drop Earrings

Materials

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

18K White Gold Heart Diamond Tennis Bracelet '12 1/2 Ct. tw'
Located in San Francisco, CA
Gemstone Color: WHITE Center Gemstone Shape: HEART Center Diamond Carat Weight: 12 Metal: 18K White Gold
Category

21st Century and Contemporary American More Bracelets

Materials

Diamond, White Gold

Art Deco Diamond Engagement Ring .12ct Old European Cut Original 1930's Antique
Located in Dearborn, MI
Diamond 18K Featuring a Gorgeous Genuine .12ct H-I/VS Natural Mined Old European Cut Diamond Center
Category

Vintage 1920s Art Deco Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

Art Deco Style 12ct Diamond with Rock Crystal 18k & Platinum Necklace / Brooch
Located in BEVERLY HILLS, CA
Statement art deco inspired convertible necklace to brooch with rock crystal. Approximately 12
Category

1990s Unknown Art Deco Brooches

Materials

Diamond, Rock Crystal, 18k Gold, White Gold, Platinum

Art Deco Diamond Engagement Ring .12ct Old European Original 1920's Antique 18K
Located in Dearborn, MI
Features a Genuine Natural .12ct F-G/VVS Old European Cut Mined Diamond Beautiful Engraved Detail 100
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Platinum Art Deco Fine White Diamond Bracelet with Fan Motif Design approx. 12ct
Located in London, GB
An absolutely fabulous classic Art Deco platinum and diamond plaque bracelet featuring large 1ct
Category

Early 20th Century European Art Deco Link Bracelets

Materials

White Diamond, Platinum

52, 000 18KT Gold Rare Magnificent 12ct Fancy Cognac Diamond Deco Style Bracelet
Located in New York, NY
Fancy Deco Style Diamond Bracelet. Bracelet is comprised of approx 12CTS of Magnificent Rare Gorgeous
Category

21st Century and Contemporary Retro Bracelets

Materials

Diamond, Gold, 18k Gold

Cartier Roadster 44mm Men's Steel Watch White Dial Custom 12ct Diamonds Ref 3405
By Cartier
Located in Pleasanton, CA
Cartier Roadster 44mm Watch. A Pre-owned watch w/ Gift box. Watch is 100% Authentic and Comes with Authenticity Card. Watch Reference is 3405 and is in Excellent Condition (See Pictu...
Category

2010s Swiss Modern Wrist Watches

Materials

Diamond, Stainless Steel

Pair of Natural Black Diamond 12, 7 Ct. Cubes/Dices with Gold Inlay
Located in Antwerp, BE
Pair of natural 12,7 Carat black diamond cubes/dice with gold inlay The dice are inlaid with gold
Category

20th Century Artisan More Jewelry

Materials

Black Diamond, Gold

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, White Gold, 18k Gold, Enamel

NWT $85, 000 Important Pair 18KT Gold Large 12CT Ceylon Sapphire Diamond Earrings
Located in New York, NY
Sapphire and Brilliant Rare Rose Cut Diamond Earrings. Earrings are comprised of approx 12 Carats of Finely
Category

21st Century and Contemporary Stud Earrings

Materials

Sapphire, Diamond, Gold, 18k Gold

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

Art Deco Platinum & Diamond Encrusted Pin/Fur Clips 12 CT / VS Quality Estate
Located in New York, NY
An absolutely exquisite platinum and diamond pin/fur clips from the Art Deco era! This wonderful
Category

Vintage 1960s Brooches

Materials

Diamond, Platinum

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Diamond 12ct For Sale on 1stDibs

You are likely to find exactly the diamond 12ct you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, White Gold and 14k Gold, this item was constructed with great care. Find an antique version now, or shop for 69 vintage or 129 modern creation for a more contemporary example of these cherished accessories. You’re likely to find the perfect diamond 12ct among the distinctive items we have available, which includes versions made as long ago as the 19th Century as well as those produced as recently as the 21st Century. Creating a diamond 12ct has been a part of the legacy of many jewelers, but those produced by LB Exclusive, Renata Bernard and David Jerome are consistently popular. A round cut version of this piece has appeal, but there are also oval cut and cabochon versions for sale. Finding a diamond 12ct for sale for women should be easy, but there are 49 pieces available to browse for unisex as well as men, too.

How Much is a Diamond 12ct?

On average, a diamond 12ct at 1stDibs sells for $6,470, while they’re typically $250 on the low end and $1,300,000 for the highest priced versions of this item.