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Men s Diamond and Black Onyx Band Ring, 14 Karat Yellow Gold
Located in Honolulu, HI
: Approximately 0.08 Carats. Ring Size: 12 (re-sizing is available for a fee). Ring Width: 9 mm Total Weight: 6.00
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Onyx, 14k Gold

18K White Gold 0.74ct Blue Sapphire 0.20ct Diamond Fine Sunburst Ring
Located in เกาะสมุย, TH
-H, 0.20 carats, 12 pcs 3.3 grams Ring height (front)= 9.9 mm approximate Band width back= 2.2 mm
Category

21st Century and Contemporary Thai Engagement Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

1950 s Round Brilliant Diamond Platinum Estate Engagement Ring GIA D/VS1
Located in Boca Raton, FL
decorative mounting features another 6 diamonds weighing .12 carats. The ring is currently size 4.5 but can
Category

Mid-20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

Bochic “Orient” Blue Sapphire Vintage Cluster Ring Set In 18K Gold Silver
By Bochic
Located in New York, NY
Sapphire - 12 Carat This Ring is from the "Orient" traveling collection are the epitome of elegance and
Category

20th Century Thai Baroque Cluster Rings

Materials

Blue Sapphire, 18k Gold, Silver

Bochic “Capri” Red Hot Ruby White Topaz Ring Set in 18K Gold Silver
By Bochic
Located in New York, NY
- 14 carats Natural Cabochon Ruby - 12 Carats This Ring is from the "Capri" traveling collection and
Category

21st Century and Contemporary Thai Baroque Cocktail Rings

Materials

Ruby, Topaz, 18k Gold, Gold Plate, Silver

Sterling Silver and Citrine Wing Ring
By Llyn strong
Located in Greenville, SC
A sterling silver wing ring set with three 2mm citrine for a total of .12 carats. Ring size 6.5
Category

2010s American Contemporary Three-Stone Rings

Materials

Citrine, Sterling Silver

12 Carat Aquamarine Diamond gold Ring
Located in Vail, CO
Aquamarine and diamond cocktail ring, centering an oval cut aquamarine weighing 12.00 carats
Category

21st Century and Contemporary American Cocktail Rings

Materials

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

Great 12 Carat Tourmaline Diamond Gold Ring
Located in Lambertville, NJ
18kt. mid-century white gold tourmaline and diamond ring. The center is set with a rectangular
Category

Vintage 1950s Unknown Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold

12 Carat Aquamarine Diamond White Gold Ring
Located in Lake Forest, IL
is an estimated 12 carats and measures 15.68 by 13.92 by 8.93mm. There are 28 step cut diamonds that
Category

20th Century Cocktail Rings

Materials

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

12 Carat Tanzanite Diamond Gold Cocktail Ring
Located in Lambertville, NJ
18k white gold cocktal ring, set with approx. 12ct tanzanite, surrounded with approx. 1.90ctw in
Category

20th Century Unknown More Rings

Materials

Diamond, Tanzanite, 18k Gold

Bulgari 12 Carat Ceylon Sapphire Diamond Ring
By Bulgari
Located in London, GB
An 11ct unheated Ceylon sapphire ring surrounded by a marquise diamond skirt by Bulgari. Circa 1980
Category

Vintage 1980s Italian Cluster Rings

Materials

Diamond, Sapphire

12 Carat Yellow Sapphire Emerald Cut Three-Stone Halo Cocktail Ring
Located in Aliso Viejo, CA
This classically inspired yellow sapphire emerald three stone ring is nothing short of magnificent
Category

Early 2000s American Modern Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Yellow Sapphire, 18k Gold, Yellow Gold...

Antique Georgian Turquoise Ruby Ring 12 Carat, circa 1800
Located in Lancaster, Lancashire
This beautiful Antique Georgian Turquoise and Ruby ring is set in 12ct Gold, Circa 1800. The ring
Category

Antique Early 1800s Unknown Georgian Cluster Rings

Materials

Ruby, Turquoise, Gold

Retro 12 Carats Aquamarine Emerald Cut 18 Carat Yellow Gold Tank Ring
Located in Paris, FR
carats Finger size: 51 (US: 5 1/2) Ring weight: 13.8 g French work Circa 1940 18K yellow gold, 750
Category

Vintage 1940s French Retro Cocktail Rings

Materials

Aquamarine, Yellow Gold

French Art Deco 12 Carats Oval Aquamarine Diamonds Platinum Ring
Located in Paris, FR
Art Deco ring in platinum set with a large oval aquamarine of 12 carats and half-cut diamonds
Category

Vintage 1920s French Art Deco Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

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

Zoya 12 Carat Round Cut H Color SI1 Clarity Diamond Ring 12.57 Carat
Located in New York, NY
Zoya is a beautiful diamond ring created by Mike Nekta in NYC. Center Diamond: Carat Weight
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

12 carats Asscher-Cut Diamonds Eternity Band
By Betteridge
Located in Greenwich, CT
Diamond eternity band ring, mounted in a shared prong, "U"-style platinum setting with a sculpted
Category

21st Century and Contemporary American Wedding Rings

Materials

Diamond, Platinum

18 Karat Rose Gold Ring with Red Tourmaline ‘Carat 12’ and Diamonds ‘Carat.1.36’
Located in Milan, IT
18 k Rose Gold Ring With Red Tourmaline (Ct 12) And Diamonds (Ct.1.36)
Category

21st Century and Contemporary Italian Contemporary Fashion Rings

Materials

Tourmaline, 18k Gold

Antique Victorian Amethyst Emerald Pearl Ring Dated 1867 12 Carat Gold
Located in Lancaster, Lancashire
For more details please click continue reading down below... This lovely little antique ring is
Category

Antique 1860s British Victorian More Rings

Materials

Amethyst, Emerald, Pearl, Yellow Gold

18-carats yellow gold and platinum ring with 12 rose-cut diamonds of 0.35 carats
Located in Monte-Carlo, MC
18-carats yellow gold 750/1000 and platinum ring with 8 rose-cut diamonds of 0.001 carats each, for
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Georgian 12 Carat Gold Pearl Blue White Enamel Panel Mourning Signet Ring
Located in St Helens, GB
solid 12 carat gold shank. 11mm x 13.5mm head. CONDITION ; Very good. Clean and solid band. Securely
Category

Antique 19th Century British George III Signet Rings

Materials

Pearl, Gold, Enamel

Contemporary 12 Carat Yellow Gold Pearl Emerald and Diamond Cluster Dress Ring
Located in Hamilton, AU
Crafted with love and affection in 12 carat yellow gold, this lovely contemporary ring features an
Category

21st Century and Contemporary Unknown Contemporary Cluster Rings

Materials

Pearl, Diamond, Emerald, Gold, Yellow Gold

Vintage Circa 1970s 12 Carat Yellow Gold Oval Cabochon Cut Lapis Lazuli Ring
Located in Hamilton, AU
Forged in 12 carat yellow gold, this opulent vintage ring, circa 1970s, features a gorgeous deep
Category

20th Century Unknown Modern Cocktail Rings

Materials

Lapis Lazuli, 10k Gold, Yellow Gold

12 Carat Natural Grey Spinel 14 Karat White Gold Cocktail Ring by D&a
By D and A Style
Located in Singapore, SG
shapes, 11,55 carat weight. 14 Karat White Gold 9 grams Ring size could be any per your request Free
Category

21st Century and Contemporary Armenian Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Pink Sapphire, Spinel, Purple Sapphire, Rhodolite, Go...

Emerald Cut Diamond Platinum Eternity Band, over 12 Carat
By Lester Lampert
Located in Chicago, IL
. They average .76ct. each stone. Diamonds are G-H Color and VS Clarity. Ring was hand made by us in
Category

Early 2000s American Contemporary Wedding Rings

Materials

Diamond, Platinum

Vintage Carved Rock Quartz and .12 CTW Diamond Ring 14K Yellow Gold
Located in Daytona Beach, FL
Vintage 1960's carved rock quartz ring with .12 carat total weight of diamonds. The ring is 14
Category

Mid-20th Century Unknown Retro Fashion Rings

Materials

Diamond, Quartz, 14k Gold

.42 Carats Diamonds Gold Halo Engagement Ring
By Gabriel Co.
Located in Columbia, MO
rings shoulders. These accent diamonds have a combined total weight of .12 carat, giving the complete
Category

2010s American Engagement Rings

Materials

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

Vintage 1.50 Carats Diamonds and Sapphires 18 Carats White Gold Cocktail Ring
Located in Paris, FR
weight of 12 sapphires: 1.12 carats Ring size : 2 x 3 x 1.36 cm (0.787 x 1.181 x 0.537 inch) Finger
Category

Mid-20th Century French Retro Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Stambolian Aged Silver 18K Gold Oval Malachite Cocktail Ring
By Stambolian
Located in Boca Raton, FL
" in Armenian. Malachite, apprx. 12 carat 1 inch band width. Ring is a size 7. Sizable by request
Category

21st Century and Contemporary American Cocktail Rings

Materials

Malachite, 18k Gold, Sterling Silver

Repossi Sapphire Diamond Ring;
By Repossi
Located in Paris, IDF
weight : 1,45 carat. 32 square diamonds weight : 2,03 carat. 12 emeralds weight : 1,07 carat. Ring
Category

Late 20th Century Italian Cocktail Rings

Materials

Diamond, Emerald, Sapphire, 18k Gold

Stambolian Aged Silver 18K Gold Oval Sleeping Beauty Turquoise Cocktail Ring
By Stambolian
Located in Boca Raton, FL
written "Stambolian" in Armenian. Malachite, apprx. 12 carat 1 inch band width. Ring is a size 7
Category

21st Century and Contemporary American Cocktail Rings

Materials

Turquoise, 18k Gold, Sterling Silver

Repossi Sapphire, Emerald and Diamond Ring
By Repossi
Located in Paris, IDF
. 12 emeralds weight : 1,07 carat. Ring size : 4,5 can be sized. Retail price : $32,800
Category

20th Century Italian Contemporary Cocktail Rings

Materials

Diamond, Emerald, Sapphire, 18k Gold

Poiray pink tourmaline and sapphire ring
Located in London, GB
shank, and set with a marquise cut pink tourmaline weighing approximately 12 carats. The ring is signed
Category

Vintage 1950s French Band Rings

Materials

Tourmaline, Sapphire, 18k Gold

Brand New Custom 12 Carat Diamond Tennis Bracelet in 18 Karat White Gold
Located in Metairie, LA
natural round brilliant-cut diamonds totaling an approximate total carat weight of 12 carats. All of the
Category

2010s American Modern Tennis Bracelets

Materials

Diamond, 18k Gold, White Gold

Impressive Retro Estate 1950s Platinum 12 Carat Diamond Aquamarine Ring
Located in Shaker Heights, OH
Stunning 14k Gold 12 Carat Diamond Aquamarine Cocktail Ring This beautiful ring is 14k gold
Category

Vintage 1950s American Retro Cocktail Rings

Materials

Aquamarine, White Diamond, 14k Gold

Certified 12 Carat Aquamarine Diamond 18k White Gold Cocktail Ring
Located in Goettingen, DE
Certified 12 Carat Aquamarine Diamond 18K White Gold Cocktail Ring Magnificent aquamarine diamond
Category

Vintage 1980s German Modern Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, White Gold

Gilbert Albert 12 Interchangeable Balls 18 Carat Yellow Gold Ring
By Gilbert Albert
Located in Paris, FR
Famous ring signed Gilbert Albert in yellow gold enhanced with diamonds and adorned in the center
Category

Vintage 1970s Swiss Contemporary Fashion Rings

Materials

Agate, Carnelian, Chalcedony, Diamond, Quartz, Cat’s Eye, 18k Gold, Yell...

2.46 Carat GIA Certified Natural AAA Red Spinel .12 Diamond Ring Platinum 18KY
By Tom Castor
Located in Lambertville , NJ
A Romantic Engagement or Right Hand Ring is set with a 2.46 Carat Oval Red Spinel of Intense Red
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Spinel, 18k Gold, Yellow Gold, Platinum

12 Carat of Sapphire and Diamond Ladies Cluster Ring 18 Karat White Gold
Located in Aliso Viejo, CA
and also another six carats of diamonds. This ring will be accompanied by a GIA Graduate Gemologist
Category

Vintage 1950s American Post-War Cluster Rings

Materials

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

AIG certified 12 carat pink corals - 0.64 carat diamonds - 0.24 carat emeralds
Located in Monte-Carlo, MC
18 carat yellow gold ring designed with 32 round brillant cut diamonds weighing 0.64 carat, 4
Category

Early 2000s Three-Stone Rings

Materials

Coral, Diamond, Emerald, 18k Gold

Yellow Gold 0.50 Carat 12 Round Diamond Channel Band
Located in Columbia, MO
The band is comprised of 14 karat yellow gold & contains 12 round brilliant cut diamonds that are
Category

21st Century and Contemporary Wedding Rings

Materials

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

GVS 0.25 Carat Diamond Ring White Gold 18 Karat Cocktail Rings Heritage Jewelry
By Héritage Jewelry
Located in Istanbul, TR
The Petite Francaise is a unique and trendy model set with 2 diamonds weighing 0.08 carats and 12
Category

21st Century and Contemporary French Cocktail Rings

Materials

Diamond, 18k Gold

0.83 Carat GVS Round Diamond Ring White Gold 18 Karat Cocktail Rings
By Héritage Jewelry
Located in Istanbul, TR
The Petite Francaise is a unique and trendy model set with 2 diamonds weighing 0.56 carats and 12
Category

21st Century and Contemporary French Contemporary Cocktail Rings

Materials

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

Lab Grown Royal Blue Kashmir Color Sapphire CZ Diamond Ring
By Magnificent Costume Jewelry
Located in New York, NY
Lab Grown Royal Blue Kashmir Color 12 Carat Sapphire CZ Diamond Ring set in Palladium clad sterling
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Sterling Silver

Royal Blue Cushion Cut Sapphire Look Costume Jewelry Ring by Clive Kandel
By Magnificent Costume Jewelry
Located in New York, NY
found on 1stibs. Lab Grown Royal Blue Kashmir Color 12 Carat Sapphire CZ Diamond Ring set in Palladium
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Sterling Silver

Classic Chic Art Deco Burma Ruby Diamond Lab Gems Costume Jewelry Ring
By Magnificent Costume Jewelry
Located in New York, NY
elegance found on 1stibs. Lab Grown Burma Ruby Color 12 Carat Ruby CZ Diamond Ring set in Palladium clad
Category

2010s North American Art Deco Fashion Rings

Materials

Diamond, Ruby, Sterling Silver

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12 Carat Ring For Sale on 1stDibs

You are likely to find exactly the 12 carat ring 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 Platinum. You can easily find a 292 antique edition and 673 modern creations to choose from as well. If you’re looking for a 12 carat ring from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 21st Century. As it relates to this specific piece, our collection includes designs that are universally popular, but .5 Carat and 1 Carat carat weights, specifically, are sought with frequency. There have been many well-made iterations of the classic 12 carat ring over the years, but those made by Roshe Jewels, LB Exclusive and Tiffany Co. are often thought to be among the most beautiful. A 12 carat ring can make for a versatile accessory, but a selection from our variety of 659 Diamond versions can add an especially stylish touch. An oval cut version of this piece has appeal, but there are also round cut and emerald cut versions for sale. When shopping for a 12 carat ring, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 12 Carat Ring?

The price for a 12 carat ring starts at $245 and tops out at $2,699,999 with these rings, on average, selling for $6,852.

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.

Questions About 12 Carat Ring
  • 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.
  • 1stDibs ExpertApril 5, 2022
    On a ring, 12K means that the piece is made out of 12-karat gold. This type of precious metal is half pure gold and half metal alloy. It comes in yellow, white and rose colors. You'll find a selection of gold jewelry on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Whether or not a 4-carat ring is big is largely a matter of personal opinion. However, 4-carat stones usually do have larger dimensions. Diamonds of this size are usually quite expensive due to their size. Shop a large selection of gemstone rings on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Hailey Bieber’s engagement ring features a six-carat oval-cut solitaire diamond. It features a simple band that keeps the focus on the stone. On 1stDibs, find a range of solitaire engagement rings from some of the top boutiques around the world.
  • 1stDibs ExpertJanuary 23, 2024
    There is no rule for how many carats are best for a wedding ring. In fact, some wedding bands feature no gemstones at all and therefore have no carat weight ratings. Also, wedding bands set with multiple stones, like eternity bands, will have higher total carat weights because of the larger number of gems. When selecting wedding rings, focus on what appeals to you and fits your budget. On 1stDibs, find a large collection of wedding rings.
  • 1stDibs ExpertNovember 2, 2023
    There is no rule for how many carats a diamond wedding ring should be. You're free to choose a ring with a carat weight that appeals to you and fits your budget. The average carat weight for diamond wedding rings is 1 to 1.9 carats. Shop an assortment of diamond wedding rings on 1stDibs.
  • 1stDibs ExpertNovember 14, 2023
    The most popular carat size for engagement rings varies from country to country. In the US, the average size is around one carat. However, engagement rings tend to be smaller in other places. For example, the average is 0.6 carats in the UK and around 0.5 carats in western Europe. On 1stDibs, shop a diverse assortment of engagement rings.
  • 1stDibs ExpertFebruary 1, 2024
    Elizabeth Taylor's famous diamond ring was 33.19 carats. Although many people believe the Krupp diamond ring was an engagement gift, Richard Burton actually bought the gorgeous Asscher-cut ring to mark their five-year anniversary. For their engagement, Burton presented Taylor with an 18.61-carat emerald and diamond pendant made by Bulgari. The pendant detached from its necklace and could double as a brooch. Explore a large selection of diamond rings on 1stDibs.
  • 1stDibs ExpertMarch 3, 2023
    Whether 2-carat is a good size for an engagement ring is a matter of personal opinion. Due to its size, a 2-carat gemstone will likely stand out and get noticed. However, some people prefer smaller engagement rings, especially if they work with their hands. Carat weight is also not the most important signifier of a stone’s value. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. On 1stDibs, shop a collection of engagement rings.