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12 Ct Diamond Ring

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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

ct 12, 53 Sapphire Diamond Gold and Silver Ring
Located in Marcianise, Marcianise (CE)
, ITEMS AT AUCTIONS AND ONGOING PROMOTIONS. A royal design for this cluster ring in 9Kt gold and silver
Category

Late 20th Century Italian Retro Cluster Rings

Materials

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

ct 45, 50 Blue Topaz Diamond and ct 12, 88 Sapphire Gold Ring
Located in Marcianise, Marcianise (CE)
, ITEMS AT AUCTIONS AND ONGOING PROMOTIONS. Shiny ring in 14kt white gold composed of a central light
Category

Late 20th Century Italian Retro Cocktail Rings

Materials

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

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

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

Amazing Flower Design Ct 7, 12 of Diamonds and Ruby on Ring
Located in Massafra, IT
From flowers collection, gorgeous design in 14k gold with baguettes cut diamonds ct 4,82 H/SI and
Category

21st Century and Contemporary Cocktail Rings

Materials

14k Gold

2.90 Ct Ceylon Sapphire Diamond Platinum Ring
Located in Chicago, IL
This vintage platinum engagement ring features a natural unheated 2.90 ct Ceylon sapphire of an
Category

20th Century Cluster Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Edwardian 1.00 Ct Diamond Platinum Panel ring
Located in Napoli, IT
diamonds totalling approx .75 Ct G-VVS/SI (.20 – .35 – .20) – 12 rose cut diamonds totalling approx .25 Ct
Category

Antique Early 1900s European Edwardian Cluster Rings

Materials

Diamond, Platinum

Art Deco .70 Ct Colombian Emerald . 75 Ct. Diamond Platinum ring
Located in Napoli, IT
old Swiss cut diamonds totaling approx .75 Ct (G/H-VVS/SI) bright white with lovely sparkle Ring
Category

Vintage 1920s European Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

Edwardian .95 Ct Diamond Platinum Rare Ring
Located in Napoli, IT
: platinum, tested Hallmarks: present Gems: 1 old European cut diamond of approx .45 Ct (G/H/VVS) – 12 early
Category

Early 20th Century European Edwardian Engagement Rings

Materials

Diamond, Platinum

Victorian 3.60 Ct Certified Burma Natural Sapphire 2.30 Ct Diamond Ring
Located in Napoli, IT
Victorian Tradition Spectacular Victorian period Diamond and Sapphire cluster ring which is in the
Category

Antique Late 19th Century European Late Victorian Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

Art Deco 1.40 Ct. Certified Pink Sapphire 1.04 CT Diamond Ring
Located in Napoli, IT
Gorgeous Art Deco Pink Sapphire Diamond ring Traditional cluster design with a rectangular crown
Category

Vintage 1930s European Art Deco Engagement Rings

Materials

Diamond, Pink Sapphire, 18k Gold, Platinum

Rare unheated AIGS certified PIGEON BLOOD ruby 2, 12 ct and diamonds on ring
Located in Massafra, IT
Rare unheated ruby Pigeon Blood 2,12 ct and round brilliant cut diamonds 1,07 G/VS , on 18k gold
Category

21st Century and Contemporary Cocktail Rings

Materials

18k Gold

Victorian 1.75 Ct Diamond J VVS plus .85 Ct Rare Cluster ring
Located in Napoli, IT
surround Centrally set with a bright white old mine cushion cut Diamond of 1.75 Ct assessed J VVS 12 old
Category

Antique 1890s European Victorian Cluster Rings

Materials

Diamond, 18k Gold

Art Nouveau 2.40 Ct Natural Sapphire 1.20 Ct Old Mine Diamond Ring
Located in Napoli, IT
2.40 Ct (9 x 7.3 mm.) – 12 old mine cut diamonds totalling approx 1.20 CT (G/H/I – VVS/SI) UK size: L 1
Category

Antique Late 19th Century European Art Nouveau Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Silver

Victorian 1.50 Ct. Diamond Twisted 18 Kt Ring
Located in Napoli, IT
centre Diamond is .60 Ct. (J/VS/Si) spreading as much as .75 CT with 9 more old European cut Diamonds in
Category

Antique Early 1900s European Edwardian Signet Rings

Materials

Diamond, 18k Gold

Certified 6.81 Ct Colombian Emerald 1.60 Ct Diamond Trilogy ring
Located in Napoli, IT
Diamond ring Comes fully certified for Colombian origin, 6.81 Ct weighted off mounting, only moderate oil
Category

21st Century and Contemporary Italian Art Deco Three-Stone Rings

Materials

Diamond, Emerald, 18k Gold

Platinum Pear Shape Diamond Eternity Ring 4.20 ct
Located in Zurich, Zollstrasse
This timeless Platinum eternity band features 24 pear shape Diamonds weighing approximately 4.20 ct
Category

Vintage 1980s Unknown Contemporary Band Rings

Materials

Diamond, Platinum

Natural Diamonds Ring 0.59 CT 18 Karat Gold Diamond Modern Cocktail Ring
Located in Antwerpen, BE
A natural diamond cluster split shank modern anniversary ring is a beautiful and versatile piece
Category

2010s Belgian Art Nouveau Cocktail Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

1.40 Ct Natural Pink Sapphire 1.20 Ct G VVS Diamond Platinum Cluster Ring
Located in Napoli, IT
6.3 mm.) – 12 early brilliant cut diamonds totalling approx 1.20 Ct (G-VVS/VS) UK size: M 3/4 US size
Category

Mid-20th Century European Contemporary Cluster Rings

Materials

Diamond, Pink Sapphire, Platinum

GIA 1.01-ct. Diamond & 18k Gold Antique Ring
Located in San Francisco, CA
-cut diamond, GIA graded I color and VVS2 clarity, surrounded by a halo of 12 old mine-cut diamonds
Category

Early 20th Century Engagement Rings

Materials

Diamond, 18k Gold

Platinum Olbia Diamond Ring '1/2 Ct. Tw'
Located in San Francisco, CA
This stunning weave ring features 12 perfectly matched round brilliant diamonds. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

1.60 Ct Baguette Diamond F IF Half Eternity Ring
Located in Napoli, IT
This is an high quality baguette Diamond ring finely hand fabricated of solid 18 KT gold Set with
Category

2010s Italian Contemporary Engagement Rings

Materials

Diamond, 18k Gold

Diamonds, 12 Karat Rose Gold and Silver Ring
Located in Marcianise, Marcianise (CE)
, ITEMS AT AUCTIONS AND ONGOING PROMOTIONS. Retrò ring in 12 kt rose gold and silver structure mounted
Category

Vintage 1940s Italian Retro Band Rings

Materials

Diamond, Rose Gold, Silver

Victorian 1.50 Ct Diamond Double Row 18 Kt Ring
Located in Napoli, IT
cut- 12 Diamonds for a total of approx 1.50 Ct rated H/I VVS/SI Shoulders detailed with scroll
Category

Antique 1880s European Victorian Engagement Rings

Materials

Diamond, 18k Gold

Art Deco Style 1.60 Ct Diamond Dazzling Dinner Ring
Located in Napoli, IT
) – 12 brilliant cut diamonds totalling approx .70 CT (G/H-VVS/VS) – baguette cut .50 Ct (G/VVS) UK size
Category

Mid-20th Century European Art Deco Cluster Rings

Materials

Diamond, 18k Gold

Victorian .60 Ct Diamond 6mm. Natural Pearl Crossover ring
Located in Napoli, IT
middle with little Diamonds set on shoulders Main Diamond is .60 Ct old European cut H/I SI2 – six more
Category

Antique 1880s European Victorian Engagement Rings

Materials

Diamond, Natural Pearl, 18k Gold

Victorian 3.80 Ct Natural Fire Opal .60 Ct Old Mine Diamond Rare Snake ring
Located in Napoli, IT
diamonds totalling approx .60 Ct (G/VVS-VS) UK size: P 1/4 US size: 7.75 Measures: head is 12 x 21 mm. (h
Category

Early 20th Century European Victorian Cluster Rings

Materials

Diamond, Fire Opal, 18k Gold

Beauvince Almost Eternity Diamond Band Ring '0.32 Ct Diamonds' in White Gold
By Beauvince Jewelry
Located in New York, NY
This classic and timeless diamond almost eternity band is just shy of an Eternity Ring leaving a
Category

2010s Wedding Rings

Materials

Diamond, White Diamond, 14k Gold, White Gold

Victorian Natural Pearl 1.90 Ct. Old Mine Diamond Ring
Located in Napoli, IT
. – 12 old mine cut diamonds totalling approx 1.90 Ct (G-VVS/VS) -4 rose cut diamonds accent UK size: N 1
Category

Antique Late 19th Century European Victorian Cluster Rings

Materials

Diamond, Natural Pearl, 18k Gold, Platinum

Natural Diamonds 0.59 ct 18KT Gold Diamond Modern Anniversary Cocktail Ring
Located in Antwerpen, BE
A natural diamond cluster split shank modern anniversary ring is a beautiful and versatile piece
Category

2010s Belgian Art Nouveau Cocktail Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Natural Diamond 0.85 CT 18K White Gold Modern Ring
Located in Antwerpen, BE
Illusion Ring with 0.85 carats of Natural Diamonds embodies refined taste and understated luxury
Category

2010s European Modern Fashion Rings

Materials

Diamond, White Gold, 18k Gold

Stunning 18K White Gold Diamond Spiral Ring with 0.05 ct Natural Diamonds
Located in רמת גן, IL
Classic Spiral Heart Design in 18K White Gold Diamond Ring with 0.05 ct Diamond Main Stone -1
Category

2010s Singaporean Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond Ring 1.27 CT 18KT White Gold Natural Emerald Ring R18528
Located in Antwerpen, BE
This stunning cluster baguette and diamond ring has a colour stone border to give it that extra
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Natural Diamond Ring 0.82 ct 18 Karat White Gold Designer Cocktail Ring
Located in Antwerpen, BE
This elegant 18kt gold ring is a true masterpiece, featuring a beautifully carved pattern that adds
Category

2010s Belgian Modern Cocktail Rings

Materials

Diamond, 18k Gold, White Gold

Natural Diamond Ring 0.82 ct 18 Karat Yellow Gold Designer Cocktail Ring
Located in Antwerpen, BE
This elegant 18kt gold ring is a true masterpiece, featuring a beautifully carved pattern that adds
Category

2010s Belgian Modern Cocktail Rings

Materials

Diamond, 18k Gold, Yellow Gold

Estate 2.10 Ct. Antique Cushion Diamond Sapphire Halo Engagement Ring
Located in Napoli, IT
An estate Diamond and sapphire engagement ring featuring a 2.10 Ct antique cushion cut – old mine
Category

Mid-20th Century European Contemporary Engagement Rings

Materials

Diamond, Sapphire, 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

Art Deco Style 1.10 Ct Diamond Sapphire Solitaire Platinum Ring
Located in Napoli, IT
round being hand cut – rated as J SI Diamond on shoulders are .12 Ct with .60 Ct natural Sapphires
Category

Vintage 1980s European Contemporary Solitaire Rings

Materials

Diamond, Sapphire, Platinum

GIA Rare 4.24 Ct. Fine Colombian Emerald & Diamond Platinum Ring
Located in Honolulu, HI
Rare 4.24 ct. Fine Colombian Emerald & Diamond Platinum Ring With GIA Report. This stunning ring
Category

Late 20th Century Colombian Cocktail Rings

Materials

Diamond, Emerald, Platinum

Natural Diamond Ring 0.82 ct 18 Karat Rose Gold Designer Cocktail Ring
Located in Antwerpen, BE
This elegant 18kt gold ring is a true masterpiece, featuring a beautifully carved pattern that adds
Category

2010s Belgian Modern Cocktail Rings

Materials

Diamond, 18k Gold, Rose Gold

Victorian 2.30 Ct Old Diamond Cut 14 KT Gold ring
Located in Napoli, IT
hosts three bright white main old mine cushion cut Diamonds totaling 1.70 Ct disposed in the a claw
Category

Antique Late 19th Century European Late Victorian Cluster Rings

Materials

Diamond, 14k Gold

French Belle Epoque 1.30 Ct Diamond Plus You & Me Ring
Located in Napoli, IT
, 1.30 Ct for both, .65 Ct each Diamond rated H/I – VVS/SI – 12 old mine cut Diamonds for for approx .20
Category

Early 20th Century French Belle Époque Engagement Rings

Materials

Diamond, Platinum, 18k Gold

Vintage 1.95 Ct. Sapphire and Diamond Cocktail Ring in Platinum
Located in New York, NY
ring will elevate any evening look. Diamond Details: Primary Stone: 1.95 ct. Oval Natural Sapphire
Category

Late 20th Century Unknown Cocktail Rings

Materials

Blue Sapphire, Sapphire, Diamond, Platinum

Art Deco 3.60 Ct Old European Diamond Solitaire Platinum Ring
Located in Napoli, IT
Diamonds For Ever This stunning antique Art Deco period Diamond solitaire ring is the understated
Category

Vintage 1920s European Art Deco Solitaire Rings

Materials

Diamond, Platinum

French Art Deco 1.50 Ct Diamond Twin Solitaire Buckle Ring
Located in Napoli, IT
1.50 Ct (G/H-VS/I) – 12 old cut diamonds totaling approx .45 Ct UK size: N 1/4 US size: 6.75 Measures
Category

Vintage 1930s French Art Deco Cocktail Rings

Materials

Diamond, 18k Gold, Platinum

Edwardian Style 1.60 Ct Diamond Platinum 18 KT Cluster Ring
Located in Napoli, IT
A Burst of Diamonds Very charming old cluster ring boasts fine hand crafting in combination with
Category

Mid-20th Century European Edwardian Cluster Rings

Materials

Diamond, 18k Gold, Platinum

David Yurman Labyrinth Sterling Silver 1.00 Ct. Pave Diamond Ring
By David Yurman
Located in New York, NY
brilliant cut pave set diamonds in the center weighing 1.00 carats total weight approximately. Ring has
Category

Late 20th Century American Contemporary Cocktail Rings

Materials

Diamond, Sterling Silver

Edwardian Natural Pearl .85 Ct Mine Cut Diamond Rare ring
Located in Napoli, IT
throughout with old mine cut Diamond for approx .85 Ct TCW rated G/H VVS/VS Ring has been hand crafted of
Category

Antique Early 1900s European Edwardian Cluster Rings

Materials

Diamond, Natural Pearl, 18k Gold, Silver

Natural Diamonds 0.50 CT 18KT White Gold Designer Statement Ring
Located in Antwerpen, BE
Carat Weight: 0.50 ct Number of diamonds:46 Average Color: F-G Average Clarity: VS Setting: Pave/Cluster
Category

2010s Belgian Art Nouveau Cluster Rings

Materials

Diamond, 18k Gold, White Gold

18K White Gold Olbia Diamond Ring '1/2 Ct. tw'
Located in San Francisco, CA
This stunning weave ring features 12 perfectly matched round brilliant diamonds. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, White Gold

14K White Gold Olbia Diamond Ring '1/2 Ct. tw'
Located in San Francisco, CA
This stunning weave ring features 12 perfectly matched round brilliant diamonds. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, White Gold

18K Rose Gold Olbia Diamond Ring '1/2 Ct. Tw'
Located in San Francisco, CA
This stunning weave ring features 12 perfectly matched round brilliant diamonds. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Rose Gold

14K Yellow Gold Olbia Diamond Ring '1/2 Ct. Tw'
Located in San Francisco, CA
This stunning weave ring features 12 perfectly matched round brilliant diamonds. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Yellow Gold

18K Yellow Gold Olbia Diamond Ring '1/2 Ct. tw'
Located in San Francisco, CA
This stunning weave ring features 12 perfectly matched round brilliant diamonds. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Yellow Gold

14K Rose Gold Olbia Diamond Ring '1/2 Ct. Tw'
Located in San Francisco, CA
This stunning weave ring features 12 perfectly matched round brilliant diamonds. Experience the
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Rose Gold

Estate 8.95 Ct Natural Yellow Sapphire Diamond English 18 KT Ring
Located in Napoli, IT
cut natural yellow sapphire of approx 8.95 Ct (14.07 x 9.75 mm) – 12 brilliant cut diamonds totaling
Category

21st Century and Contemporary English Contemporary Band Rings

Materials

Diamond, Yellow Sapphire, 18k Gold

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12 Ct Diamond Ring For Sale on 1stDibs

You are likely to find exactly the 12 ct diamond ring you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Gold, 14k Gold and 18k Gold, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect 12 ct diamond ring may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. Finding an appealing 12 ct diamond ring — no matter the origin — is easy, but David Jerome, Kabana and Sebastian Bernard each produced a popular version that is worth a look. An oval cut version of this piece has appeal, but there are also round cut and mixed cut versions for sale. There aren’t many items for men if you’re seeking a 12 ct diamond ring, as most of the options available are for women and unisex.

How Much is a 12 Ct Diamond Ring?

On average, a 12 ct diamond ring at 1stDibs sells for $6,500, while they’re typically $250 on the low end and $1,300,000 for the highest priced versions of this item.

Finding the Right rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. 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

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.