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Octagon Shape Swiss Blue Topaz Diamond Halo Art Deco Style White Gold Pendant
By Unbranded
Located in Oakton, VA
brilliant cut diamonds, each with a 1.1 3 mm. with total of 31 diamonds. The diamond are of excellent
Category

21st Century and Contemporary Art Deco Pendant Necklaces

Materials

Diamond, Blue Topaz, 14k Gold, White Gold

18ct White Gold Platinum 1920s Amethyst and Diamond Rectangular Cluster Ring
Located in Brighton, GB
white gold ring from the 1920s, featuring a captivating emerald-cut amethyst weighing an impressive 12
Category

Early 20th Century English Cluster Rings

Materials

Amethyst, Diamond, 18k Gold, White Gold, Platinum

Multi-Cut Pink and Green Tourmaline Wide Band Ring Set in 14 Karat Yellow Gold
Located in Scottsdale, AZ
and Diamonds Tourmaline Count: 5 Tourmaline Cut: Emerald, Round, Oval, Square and Pear Tourmaline
Category

21st Century and Contemporary Unknown Contemporary Band Rings

Materials

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

Gin Grace 14K White Gold Genuine Blue Sapphire Ring with Diamonds for women
Located in New York, NY
Carat and Round-Cut Prong Setting Diamond (12 pcs) 0.15 Carat accent stones for a lovely design. This
Category

21st Century and Contemporary Chinese Art Deco Fashion Rings

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

Diamond Sapphire Ring Platinum Band Engagement
By Estate Jewelry
Located in East Brunswick, NJ
and strong brilliance. Two emerald cut diamonds total .50 carat and two tapered diamonds total .12
Category

20th Century Band Rings

Materials

Diamond, Sapphire, Platinum

Waslikoff and Sons Art Deco 1940 Platinum Bracelet 42.84 Ctw Diamonds Aquamarine
By M. Waslikoff Sons
Located in Miami, FL
carats. Embellished with 27 round European cuts diamonds, 3.36 carats, E/F color, VS-1 clarity. Have a
Category

Vintage 1940s American Art Deco Link Bracelets

Materials

Diamond, Aquamarine, White Diamond, Platinum

OSCAR HEYMAN Cocktail Ring In 18Kt Gold With 2.64 Ctw In Diamonds And Rubies
By Oscar Heyman
Located in Miami, FL
round brilliant cut diamonds, with a weight of about 1.24 carats, white colorless E/F color, VS-1
Category

Vintage 1970s American Modernist Cocktail Rings

Materials

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

Rectangular Imperial Orange Colour Topaz in Diamond Border set in 18K Ring
Located in London, GB
finish. 1 x Imperial Topaz, approximate weight 6.0 carats 20 x diamonds approximate total weight 1.6
Category

Vintage 1970s British Modern Cocktail Rings

Materials

White Diamond, Topaz, 18k Gold

FRENCH Modernist Geometric Ring In 18Kt Gold With 52.40 Ctw Diamonds Tiger Eye
Located in Miami, FL
, with 48 calibrated round brilliant cuts diamonds, 2.40 carats, white colorless F color, VS-2 clarity
Category

Vintage 1970s French Modernist Cocktail Rings

Materials

Diamond, Tiger s Eye, White Diamond, Gold, Yellow Gold, 18k Gold

French Art Deco Synthetic Ruby Diamond Halo Ring, 18K Gold, Circa 1920 s
Located in Chatham, CA
grown Ruby (approx. 3.79 carats - 12 x 9 x 4 mm.) - surrounded by 18 round prong set old cut diamonds
Category

Early 20th Century French Art Deco Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Georgios Collections 18 Karat Gold Diamond Multi-Color Lion Head Bangle Bracelet
By Georgios Collections Inc
Located in Astoria, NY
Head symbol of strength cuff features 20 Brilliant Cut Diamonds with a total weight of 0.30 Carat, and
Category

21st Century and Contemporary Greek Byzantine Bangles

Materials

Diamond, White Diamond, Emerald, Multi-gemstone, Ruby, Sapphire, Blue Sa...

Blue Topaz Onyx Diamond Art Deco Style Step Shoulder Ring in 14K White Gold
Located in Bangkok, TH
Step Shoulder Ring in 14K White Gold. This stunning piece features a captivating emerald cut blue topaz
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

Diamond, Onyx, Topaz, Blue Topaz, 14k Gold, White Gold

Platinum Ruby Diamond Ring Womens Size 6.75 Cocktail Mozambique
Located in New York, NY
: Diamond Secondary Carat Weight: 2.22 Ct No. Of Diamond: 12 Pcs. Secondary Stone Cut: Round - Emerald
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Ruby, Platinum

Temple St Clair Poison Ring In 18Kt Gold With 11.10 Ctw Diamonds And Moonstone
By Temple St. Clair
Located in Miami, FL
, with 4 round brilliant cut diamonds, 0.11 carats, white colorless E/F color, VS-2 clarity. Moonstone
Category

1990s Italian Modernist Cocktail Rings

Materials

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

Aquamarine Blue Sapphire Diamond Art Deco Style Dinner Ring in 18K White Gold
Located in Bangkok, TH
Cut Size: 4 x 3, 2 mm. Number: 12 Weight: 1.50 Carat (approx. total weight) Accent Gemstones Type
Category

21st Century and Contemporary Thai Art Deco Cocktail Rings

Materials

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

11.80 MM South Sea Pearl and Diamond Cocktail Ring Set in Platinum
Located in Tokyo, JP
A stunning Cocktail Ring featuring a 11.80 mm, Japanese Akoya Pearl and 0.60 Carats of Diamond
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Pearl, South Sea Pearl, Platinum

Art Deco style diamond sapphire platinum navette ring
Located in Beverly Hills, CA
: Marquise cut diamond Weight: 0.78 carats Color: H Clarity: SI2 Accent stone: 12 emerald cut sapphires
Category

1990s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

TIFFANY Co. Jazz Platinum Diamond Double Drop Pendant Necklace
By Tiffany Co.
Located in Los Angeles, CA
1 emerald cut diamond, carat total weight .12 Hallmark: "©2003 TIFFANY&CO. PT950" on pendant
Category

2010s American Pendant Necklaces

Materials

Diamond, Platinum

MIKIMOTO Classic Pair Of Convertible Pearls Earrings 18Kt Gold 2.08 Ctw Diamonds
By Mikimoto
Located in Miami, FL
, VS clarity. Diamonds: Mounted in side-prongs settings, with 2 emerald cut diamonds, 0.16 carats
Category

Vintage 1970s Japanese Modernist Dangle Earrings

Materials

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

2.01 ct Total Weight Engagement Ring
By Antinori Fine Jewels
Located in Chicago, IL
stone's graceful proportions. Enhancing the allure of the center diamond are 12 Round Brilliant Cut side
Category

2010s American Modern Engagement Rings

Materials

Diamond, Emerald, Platinum

2.01 ct Total Weight Engagement Ring
2.01 ct Total Weight Engagement Ring
$15,200 Sale Price
20% Off
Aven Green Sapphire Earrings 14K White Gold Post Earrings Natural round diamond
Located in Greeneville, TN
, emerald-cut for bold, clean lines and vivid color saturation. Diamond Halo: 12 round diamonds (0.29ctw
Category

21st Century and Contemporary American Artisan Stud Earrings

Materials

Diamond, Green Sapphire, White Gold

Bezel Set Multi Shape Diamond Band Ring 14K White Gold 2.59Cttw Size 7
Located in New York, NY
: 2.59 carats. Diamond quality: color G-H and VS-SI clarity. Ring size: 7. Band width: 12 mm. Total
Category

2010s Modern Band Rings

Materials

Diamond, 14k Gold, White Gold

OSCAR HEYMAN Deco Geometric Bracelet In Platinum With 30.64 Ctw In VS Diamonds
By Oscar Heyman
Located in Miami, FL
clarity. Diamonds: Mounted in channel settings, with 12 calibrated emerald faceted cuts diamonds with a
Category

Vintage 1960s American Art Deco Link Bracelets

Materials

Diamond, White Diamond, Platinum

18 Karat Yellow Gold Diamond Snake Ring, Circa 1913
Located in London, GB
is bezel set with a pair of transitional cut diamond eyes for a total weight of 0.20 carats
Category

Vintage 1910s British Retro Band Rings

Materials

Diamond, Gold, Yellow Gold, 18k Gold

GIA Platinum Sapphire Burma No Heat Diamond Ring Antique AGL Old Mine 6.33 Cts
Located in Sylvania, GA
Gorgeous Vintage Sapphire is Crowned With 3.68 Carats of Sparkling Old Mine Cut Diamonds) Still
Category

20th Century Cocktail Rings

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

Seaman Schepps 14K Gold Gemstone Pearl Necklace
By Seaman Schepps
Located in Queens, NY
channel set single cut diamonds weighing a total of approx. 5.50 carats, worn as brooch with double
Category

20th Century American Multi-Strand Necklaces

Materials

Diamond, Emerald, Lapis Lazuli, Pearl, Ruby, Blue Sapphire, 14k Gold, Ye...

Round Diamond and Sapphire Double Halo Art Deco Style Pendant in 18K White Gold
Located in Bangkok, TH
Sapphire, Emerald, Ruby) is a specialty cut to surround the excellent round brilliant cut center diamond
Category

21st Century and Contemporary Thai Art Deco Pendant Necklaces

Materials

Diamond, Sapphire, 18k Gold, White Gold

Natural Solitaire Sapphire Ring 6.5 14k W Gold 7 TCW Certified
Located in Brooklyn, NY
/Composite Sapphire Stone Cut: Emerald Mixed Cut Stone Color: Blue Transparency: Translucent Saturation
Category

2010s American Fashion Rings

Materials

Sapphire, Gold

18k White Gold Rock Crystal Black Onyx Baguette Diamond Domed Button Earrings
Located in Montclair, NJ
. The diamonds are straight baguette and round brilliant cut and total approximately 1.82 carats in
Category

Early 2000s Drop Earrings

Materials

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

Kai 7.90ctw Amethyst White Sapphire Butterfly Ring
Located in Rowland Heights, CA
Amethyst|Purple|Emerald Cut|Eye Clean Amethyst CTW: 7.50 12 Pieces Natural White Sapphire|White|Marquise
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Amethyst, Sapphire, 14k Gold

14k Gold Diamond Gemstone Baroque Pearl Artist Painters Pallet Brooch Pendant
Located in Montclair, NJ
special statement! Enjoy :) --Stone(s):-- (12) Natural Genuine Diamonds - Round Brilliant, Old Mine, Old
Category

Vintage 1970s Brooches

Materials

Amethyst, Aquamarine, Citrine, Diamond, Garnet, Moonstone, Pearl, Ruby, ...

Create Your Own Snowflake Flower Diamond Halo Stud Earrings With Any Stone/Metal
Located in Wan Chai District, HK
feature a pair of Round Brilliant Cut Diamonds as the center stones, totaling 0.70 carats. These stunning
Category

21st Century and Contemporary Hong Kong Contemporary Stud Earrings

Materials

Diamond, 14k Gold, 18k Gold, Rose Gold, White Gold, Yellow Gold

VICTORIAN 1880 Antique Ring In Yellow Gold With 8.95 Ctw In Opal And Diamonds
Located in Miami, FL
gold of 9 karats and .800/.999 silver for the setting of the thirty-two European rose cut diamonds. The
Category

Antique 1880s English Late Victorian Cocktail Rings

Materials

Diamond, Opal, Gold, Yellow Gold, Silver

Sapphire Ballerina Ring
Located in New York, NY
Sapphire Ballerina Ring A ballerina ring set with a center emerald cut sapphire, 12 marquise, and
Category

20th Century Unknown Fashion Rings

Materials

Diamond, Sapphire, Platinum

Nina Zhou 7.20 ctw Aquamarine Cluster Earrings
By Nina Zhou
Located in Rowland Heights, CA
Discover Nina Zhou Emerald Cut and Heart Shape Aquamarine Cluster Earrings in 14k Yellow Gold. The
Category

21st Century and Contemporary American Modern Stud Earrings

Materials

Aquamarine, 14k Gold, Yellow Gold

11ct Aquamarine Ring Vintage 14k Yellow Gold Square Cocktail Fine Jewelry
Located in Torrance, CA
karat yellow gold. Emerald cut aquamarine measures 13.5mm x 12mm (estimated at 11 carats). The
Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

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

David Webb Tutti Frutti Ring
By David Webb
Located in New York, NY
, accented with 12 round cut diamonds French import assay marks for platinum and 18 carat gold Signed David
Category

Vintage 1960s American Cocktail Rings

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold, Platinum

14k Gold Gemstones OJC2203/01/01
By Oshi Jewels
Located in Bangkok, TH
Gold / Yellow Gold / White Gold (WRITE A MESSAGE FOR YOUR REQUIRED GOLD COLOR) - Diamond Cut :- Round
Category

21st Century and Contemporary Thai Modern Stud Earrings

Materials

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

18k Gold Gemstones OJC2203/01/01
By Oshi Jewels
Located in Bangkok, TH
Gold / Yellow Gold / White Gold (WRITE A MESSAGE FOR YOUR REQUIRED GOLD COLOR) - Diamond Cut :- Round
Category

21st Century and Contemporary Thai Modern Stud Earrings

Materials

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

Temple St Clair Cocktail Ring in 18kt Yellow Gold with 11.26 Cts Oval Moonstone
By Temple St. Clair
Located in Miami, FL
, with 1 oval cabochon cut (16 x 12 x 8 mm) carved from natural translucent moonstone of 11.26 carats
Category

Late 20th Century Italian Medieval Cocktail Rings

Materials

Moonstone, Gold, 18k Gold, Yellow Gold

Temple St Clair Cocktail Ring in 18kt Yellow Gold with 11.26 Cts Oval Moonstone
By Temple St. Clair
Located in Miami, FL
, with 1 oval cabochon cut (16 x 12 x 8 mm) carved from natural translucent moonstone of 11.26 carats
Category

Late 20th Century Italian Medieval Cocktail Rings

Materials

Moonstone, Gold, 18k Gold, Yellow Gold

Sophia D. Three Stone Ring
By Sophia D
Located in New York, NY
A one of a kind Sophia D art deco style three-stone ring featuring emerald cut diamonds and emerald
Category

2010s Fashion Rings

MODERNIST Studs Earrings In 14Kt Yellow Gold With Two Precious Opals
Located in Miami, FL
fire of diamond. The best opals command prices per carat that rival expensive diamonds, rubies
Category

20th Century American Modernist Stud Earrings

Materials

Opal, Gold, Yellow Gold, 14k Gold

Sophia D. Hexagonal Multi-Gem Ring
By Sophia D
Located in New York, NY
french cut emeralds and blue sapphires and accented with round diamonds set in platinum. Total center
Category

2010s Fashion Rings

3.89 Carat Cabochon Green Emerald and Diamond Platinum Pendant
By David Gross Group
Located in New York, NY
3.89 carat Cabochon Green Emerald set with one modified pear step cut diamond .71 carats D / VS2
Category

2010s North American Contemporary Pendant Necklaces

Materials

Diamond, Emerald, Platinum

Emerald Ruby Bypass Ring
Located in Sarasota, FL
carat Colombian emerald 16 round diamonds weighing 0.24 carats 12 baguette cut diamonds weighing 0.60
Category

2010s Fashion Rings

Materials

Diamond, Emerald, Ruby, White Gold

EGL Certified .50 Carat Round Diamond Emerald Halo Platinum Engagement Ring
Located in Stamford, CT
center diamond. Encased in the shimmering embrace of a square cut emerald and round brilliant cut
Category

Early 20th Century Engagement Rings

Materials

Diamond, Emerald, Platinum

2.84 Carat Interchangeable Diamond Earrings Set with Heart Shape Diamonds
By Be Jolie
Located in New York, NY
mounted in 14K white gold. Jewel Details Diamond Petals: 12 Heart Shaped Diamonds - 2.84 Carat Total
Category

2010s American Romantic Stud Earrings

Materials

Diamond, Emerald, Blue Sapphire, Pink Sapphire, 14k Gold, White Gold

Natural Fancy Lime Green Diamonds 1.01 Carats 18KT White Gold Engagement Ring
Located in Antwerpen, BE
This exclusive engagement ring is made with a stunning lime green diamond, 1.01 carats Emerald cut
Category

2010s Belgian Artisan Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

2.84 Carat Floral Interchangeable Diamond Earrings Set with Heart Shape Diamonds
Located in New York, NY
mounted in 14K white gold. Jewel Details Diamond Petals: 12 Heart Shaped Diamonds - 2.84 Carat Total
Category

2010s American Romantic Stud Earrings

Materials

Diamond, Emerald, Blue Sapphire, Pink Sapphire, 14k Gold, White Gold

12 Carat Fancy Intense Pink Diamond Cocktail Ring with Emerald Cut GIA
Located in Carmel By The Sea, CA
This unparalleled ring showcasing a stunning Emerald Cut 12-carat pink diamond with desirable
Category

2010s North American Modern Cocktail Rings

Materials

White Diamond, Pink Diamond, Emerald, 14k Gold

Emerald Ring with 12 Old Cut Diamonds, 14 Carat, 18th Century
Located in Berlin, DE
Emerald ring with 12 old cut diamonds, 14 carat, 18th century. 14 carat gold Europe, 18th century
Category

Antique 18th Century German Baroque Cocktail Rings

Materials

Diamond, Emerald, 14k Gold

23.55 Carat Emerald Cut Emerald and Diamond Necklace
Located in METAIRIE, LA
Circa 1880 10KT Gold Chain as well as a 14KT Gold Toggle Clasp. With a Central 23.55 carat Emerald cut
Category

Vintage 1960s Pendant Necklaces

Materials

Emerald, Diamond, 10k Gold, Sterling Silver

Emerald Cut Emerald 1.89 Carat Diamond 18 Carat White Gold Ring
By Cartmer
Located in Sydney, AU
Emerald Cut Emerald and Diamond 18 Carat White Gold Ring by Cartmer Jewellery Size M 1 Emerald
Category

2010s Australian Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Spectacular 12 Carat Cabochon Emerald Diamond Gold Flower Brooch
Located in San Francisco, CA
emeralds. The 12 carat (approx) pear shape cabochon bud, while not of the highest gem quality, is a richly
Category

20th Century Brooches

Materials

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

GIA Certified Emerald Cut Diamond 1.87 Carat Diamonds Platinum Earrings
Located in New York, NY
diamonds. Center diamonds are GIA certified square emerald cut 1.87 ct. Accent of pear cut diamonds 4.96 ct
Category

2010s American Contemporary Clip-on Earrings

Materials

White Diamond, Diamond, Emerald, Platinum

18 Karat Yellow Gold 12 Carat Emerald Diamond Cluster Ring
By Jiedy Jewels
Located in Indooroopilly, QLD
18 Karat Yellow Gold 12 Carat Emerald Diamond Cluster Ring Handmade 18kt yellow gold hand pierced
Category

2010s Australian Art Deco Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

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12 Carat Emerald Cut Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 12 carat emerald cut diamond for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Yellow Gold. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect 12 carat emerald cut diamond 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. A 12 carat emerald cut diamond from Meghna Jewels, Roman Malakov and J. Birnbach — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for an emerald cut iteration of this accessory, while there are also mixed cut cut and rose cut cut versions available here, too. There aren’t many items for men if you’re seeking a 12 carat emerald cut diamond, as most of the options available are for women and unisex.

How Much is a 12 Carat Emerald Cut Diamond?

The price for a 12 carat emerald cut diamond starts at $1,350 and tops out at $1,300,000 with these rings, on average, selling for $27,323.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.