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20 Carat Center Diamond Ring

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20 Carat Blue Sapphire Ring
By Diamond Scene New York
Located in New York, NY
An INCREDIBLE Sapphire! 20.07 carat oval “Royal” Vivid Blue center Ceylon sapphire. 1.32 carat
Category

21st Century and Contemporary Cocktail Rings

Materials

Blue Sapphire, Platinum

.20 Carat Diamond Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 7.5 Metal Type: Platinum Weight: 2.5 grams Center Diamond Details: Shape
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.20 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond Details
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

Platinum Aster Floral Diamond Ring '1/20 Carat'
Located in San Francisco, CA
This ring features six round brilliante diamonds sprong set into leaves that wrap around the finger
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Retro 20 Carat Coral & Diamond Cocktail Ring
Located in Santa Barbara, CA
- 1949 Metal: 18k Yellow & White Gold Center Gemstone: Natural Coral Carat Weight: 20 Carat Cut
Category

Vintage 1940s Retro Cocktail Rings

Materials

Coral, Diamond, 14k Gold, Yellow Gold

.20 Carat Diamond White Gold Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 6.25 Metal Type: 18 Karat White Gold Weight: 2.2 grams Center Diamond
Category

Vintage 1910s Unknown Edwardian Engagement Rings

Materials

White Diamond, 18k Gold, White Gold

Platinum Oval Green Emerald and Diamond Ring 'Center- 0.93 Carat'
Located in San Francisco, CA
This elegant platinum ring features a 0.93-carat Oval shape Green Emerald set in four prongs Lucida
Category

21st Century and Contemporary American More Rings

Materials

Diamond, Emerald, Platinum

SCARSELLI 20 Carat Fancy Vivid Yellow Natural Diamond Ring GIA
By SCARSELLI
Located in New York, NY
This astonishes classic ring From Scarselli features a 20-carat Fancy Vivid Yellow Radiant Cut
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

Charles Krypell 20 Carat Emerald Diamond Gold Ring
By Charles Krypell
Located in New York, NY
18k gold ring by Charles Krypell, with center approx. 20ct emerald cabochon (has chip under one
Category

20th Century American More Rings

Materials

Diamond, Emerald, Gold

Art Deco Style 5.63 Carat Center Diamond Engagement Ring
Located in Narberth, PA
A breathtaking Art Deco-style diamond engagement ring! This stunning piece is crafted in platinum
Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

18 Karat White Gold Aster Floral Diamond Ring '1/20 Carat'
Located in San Francisco, CA
This ring features six round brilliante diamonds sprong set into leaves that wrap around the finger
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, White Gold

14 Karat White Gold Aster Floral Diamond Ring '1/20 Carat'
Located in San Francisco, CA
This ring features six round brilliant diamonds prong set into leaves that wrap around the finger
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, White Gold

18 Karat Rose Gold Aster Floral Diamond Ring '1/20 Carat'
Located in San Francisco, CA
This ring features six round brilliant diamonds prong set into leaves that wrap around the finger
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Rose Gold

14 Karat Yellow Gold Aster Floral Diamond Ring '1/20 Carat'
Located in San Francisco, CA
This ring features six round brilliant diamonds prong set into leaves that wrap around the finger
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Yellow Gold

14 Karat Rose Gold Aster Floral Diamond Ring '1/20 Carat'
Located in San Francisco, CA
This ring features six round brilliant diamonds prong set into leaves that wrap around the finger
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Rose Gold

18 Karat Yellow Gold Aster Floral Diamond Ring '1/20 Carat'
Located in San Francisco, CA
This ring features six round brilliante diamonds sprong set into leaves that wrap around the finger
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Yellow Gold

.20 Carat Diamond Platinum Engagement Ring and Wedding Band Set
Located in Atlanta, GA
Item Details: Ring Size: 7 Metal Type: Platinum Weight: 5.5 grams Center Diamond Details Shape
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

1940s 20 Carat Aquamarine and Diamond 14 Karat Gold Ring
Located in Atlanta, GA
Details: Cut: Step Emerald Cut Color: Santa Maria Carat: 20 carats Type: Aquamarine Diamond Details
Category

Vintage 1940s American Retro Cocktail Rings

Materials

Aquamarine, Diamond, Gold, 14k Gold

GIA Certified 3 Carat Center VVS1 -D Emerald Cut Diamond Ring 8.3 Carats Total
Located in Tustin, CA
Incredible ring features a GIA certified 3 carat cut-cornered step cut (emerald cut) diamond center
Category

2010s American Contemporary Cocktail Rings

Materials

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

GIA Certified 20 Carat COLOMBIAN MINOR OIL Ring
By Antinori Fine Jewels
Located in Rome, IT
An investment grade Oval Cut Natural Colombian Green Emerald & Pear Cut Diamond Engagement Ring
Category

2010s Italian Modern Solitaire Rings

Materials

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

1940s Art Deco .20 Carat Diamond White Gold Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 8.25 Metal Type: 18 Karat White Gold Weight: 2.0 grams Center Diamond
Category

Vintage 1940s Unknown Art Deco Engagement Rings

Materials

White Diamond, 18k Gold, White Gold

14 Karat White Gold Radiant Shape Blue Sapphire Diamond Ring 'Center-0.75 Carat'
Located in San Francisco, CA
This infinity style ring features a 0.75 - carat square radiant Sri Lankan Light Blue Sapphire
Category

21st Century and Contemporary American More Rings

Materials

Diamond, Blue Sapphire, White Gold

.20 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 4.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.20 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Radiant Cut 1.23 Carat Center Stone Diamond Engagement Ring, 14k Yellow Gold
Located in Honolulu, HI
Radiant Cut 1.23 Carat Center Stone Diamond Engagement Ring - 14k Yellow Gold. The 1.23 carat
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold

20 Carat Fancy Deep Brown Orange Diamond Engagement Ring, GIA Certified
Located in New York, NY
Orange diamond Rectangular-cut diamond. The large size of the center stone turns this ring into a real
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, White Gold

20 Carat Oval Cut Diamond Engagement Ring GIA Certified FVOP VS2
Located in New York, NY
RHAEGAL 20 CARAT MEN’S PINK DIAMOND CHANDELIER ENGAGEMENT RING 14K WHITE GOLD BY MIKE NEKTA NYC
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, White Gold

1.03 Carat Center Diamond in 18 Karat White Gold with 0.82 Carat of Diamonds
Located in Palm Desert, CA
addition are 20 baguette cut diamonds, weighing 0.50 carats and 28 round brilliant cut diamonds weighing
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, White Gold, 18k Gold

18 Karat White Gold Halo Round Diamond Ring 'Center, 2.00 Carat G-SI2 EGL USA'
Located in San Francisco, CA
This stunning ring features a Heart and Arrows 2.00 -Carat round diamond G in color, SI2 in Clarity
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Gold

J. Birnbach Platinum Art Deco Diamond Ring with Marquise Center Diamond
Located in New York, NY
straight baguettes and 20 European cut diamonds. The total carat weight in the ring is 2.00 carats
Category

Mid-20th Century Art Deco Fashion Rings

Materials

Diamond, Platinum

.20 Carat Total Weight Edwardian Diamond 18 Karat Yellow Gold Engagement Ring
Located in Atlanta, GA
, Sapphire & Pearl center stones (.50ct each stone) Type: Natural, no treatments. Diamond Weight: .20ct
Category

Antique Early 1900s Unknown Edwardian Engagement Rings

Materials

Diamond, Yellow Gold

Gold Diamond Enhancer Wedding Band, 14k Round Brilliant .20 Carat Guard Ring
Located in Greensboro, NC
Information: Natural Diamonds Total Carats: .20ctw Cut: Round Brilliant Color: G - H Clarity: SI1 Center
Category

21st Century and Contemporary Unknown Wedding Rings

Materials

Diamond, 14k Gold, White Gold

Blue Sapphire and Diamond Heart Ring
By Diamond Scene New York
Located in New York, NY
diamonds set in the center heart Currently a size 6.5, this ring can easily be resized.
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Blue Sapphire

Tiffany & Co. Platinum True Round Diamond Engagement Ring .20 ct EVS1
By Tiffany & Co.
Located in New York, NY
setting showcasing the iconic T from the True collection featuring a round brilliant diamond center
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

Platinum Oval Eternity Diamond Ring '4 Carat'
Located in San Francisco, CA
This Eternity Ring showcase perfectly matched 20 Oval shape Natural Diamonds in a total weight of
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Oval Eternity Diamond Ring '3 Carat'
Located in San Francisco, CA
3.00 carat set in a shared prongs ring Product details: Center Gemstone Color: WHITE Side Gemstone
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Radiant Eternity Diamond Ring '6 Carat'
Located in San Francisco, CA
This Eternity Ring showcase perfectly matched 20 Emerald shape Natural Diamonds in a total weight
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Gela Diamond Ring '1/6 Carat'
Located in San Francisco, CA
This stackable fashion ring features 0.15-carat total weight of round brilliant diamonds is an
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Art Deco 1.10 Carat Diamond Platinum Ring
Located in Montgomery, AL
). The platinum setting features a sparkling center diamond that measures approximately 1.10 carats. The
Category

Vintage 1920s Art Deco Engagement Rings

Materials

White Diamond, Platinum

2.16 Carat Tourmaline Diamond Yellow Gold Ring
By DGI
Located in Los Angeles, CA
This Tourmaline and Diamond Ring has a 1.91 Carat Oval Cut light green Tourmaline set in the center
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Tourmaline, Diamond, 14k Gold, Yellow Gold

Art Deco Ring w Diamonds in Platinum, 1.50 ct center VS1 Clarity
Located in Austin, TX
: 1.50 Carat Center Diamond Clarity: VSI-1 (excellent, eye clean) Center Diamond Color: K (excellent
Category

Vintage 1930s American Art Deco Engagement Rings

Materials

Diamond, Platinum

Platinum and Baguette Cut Diamond Ring with Blue Topaz Center
Located in Boca Raton, FL
Blue Topaz center very vibrant in color surrounded by 10 carats and diamonds. Ring is made in platinum
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, Topaz, Platinum

Retro Inspired 20 Carat Kunzite Ring in 18K White Gold with 0.66 CT in Diamonds
Located in Miami, FL
Shop this 20.76 carat oval cut pink Kunzite ring in 18K white gold with 0.66 carats diamond side
Category

2010s North American Retro Cocktail Rings

Materials

Diamond, Kunzite, 18k Gold, White Gold

1.30 Carat Round Brilliant Diamond Platinum Engagement Ring
Located in Sherman Oaks, CA
stone Diamond weight: 1.30 carats Side Stones are Approximately .20 carats each (.40 Total), SI Clarity
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

8.23 Carat Round Tanzanite Square Shank 5.02 Carat Diamond Engagement Ring
By Sebastian Bernard
Located in Los Angeles, CA
Square Shank Invisible set (you see no metal) Diamond Engagement Ring. Details: Center Stone: 8.23
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Tanzanite, 18k Gold

6.56 Carat Aquamarine Diamond White Gold Cocktail Ring
By DGI
Located in Los Angeles, CA
This ring has a 6.12 Carat Emerald Cut Aquamarine set in the center of the ring and is surrounded
Category

2010s American Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

.70 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 4 Metal Type: Platinum Weight: 3.0 grams Center Diamond Details Shape: Old European
Category

Vintage 1910s Unknown Edwardian Engagement Rings

Materials

White Diamond, Platinum

3.20 Carat Tourmaline Diamond Halo Platinum Engagement Ring
Located in Stamford, CT
1960's Tourmaline and diamond engagement ring. 3.20ct tourmaline center stone with a halo of round
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Tourmaline, Platinum

Art Deco 1.97 Carat TW Diamond Platinum Ring
Located in Scotts Valley, CA
almost 2 carats—1.97 carats Total Weight! The center Old Euro cut diamond measures 7.1 x 6.9 x 4.5mm and
Category

Early 20th Century Art Deco Bridal Rings

Materials

Diamond, Platinum

.68 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 7.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.5 grams Center Diamond
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.86 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 5.95 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.2 grams Center Diamond
Category

Vintage 1910s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.50 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 6.25 Metal Type: Platinum Weight: 2.8 grams Center Diamond Details Shape: Old European
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

1.58 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 5.75 Metal Type: Platinum Weight: 3.3 grams Center Diamond Details Shape: Old European
Category

Vintage 1910s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.70 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 7.5 Metal Type: Platinum Weight: 3.5 grams Center Diamond Details Shape
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

1.96 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 5.95 Metal Type: Platinum Weight: 4.7 grams Center Diamond Details Shape
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

1.59 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 6.90 Metal Type: Platinum Weight: 4.3 grams Center Diamond Details
Category

Vintage 1940s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.80 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Item Details: Ring Size: 5.80 Metal Type: Platinum Weight: 3.5 grams Center Diamond Details
Category

Vintage 1940s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

.95 Carat Diamond Platinum Cocktail Ring
Located in Atlanta, GA
Ring Size: 7 Metal Type: Platinum [Hallmarked, and Tested] Weight: 4 grams Center Diamond
Category

Vintage 1910s Unknown Edwardian Cocktail Rings

Materials

White Diamond, Platinum

1.04 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 5.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

White Diamond, Platinum

1.10 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 6.35 Metal Type: Platinum Weight: 3.9 grams Center Diamond Details Shape: Old European
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Sapphire, Platinum

.75 Carat Diamond Platinum Engagement Ring
Located in Atlanta, GA
Ring Size: 4 Metal Type: Platinum Weight: 4.4 grams 1st and 2nd Center Diamond Details Shape: Old
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

White Diamond, Emerald, Platinum

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20 Carat Center Diamond Ring For Sale on 1stDibs

Surely you’ll find the exact 20 carat center diamond ring you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Each design created in this style — which was crafted with great care and often made from gold, yellow gold and white gold — can elevate any look. You can easily find a 967 antique edition and 680 modern creations to choose from as well. You’re likely to find the perfect 20 carat center diamond ring 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 20 carat center diamond ring from LB Exclusive, Roshe Jewels and Tiffany & Co. — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes oval cut and old european cut alternatives. If you’re browsing our inventory for a 20 carat center diamond ring, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a 20 Carat Center Diamond Ring?

On average, a 20 carat center diamond ring at 1stDibs sells for $4,993, while they’re typically $195 on the low end and $1,190,000 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.