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20 Carat Diamond Square Ring

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GIA Certifie 4.02 Carat Asscher Cut Square Diamond Engagement Platinum Ring
Located in Aventura, FL
This Gorgeous Diamond ring is accompanied by a GIA Certificate Graded report certifying that the
Category

21st Century and Contemporary American Modernist Bridal 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

Vintage Inspired Bright Blue Square Sapphire & Diamond 9 Carat Gold Cluster Ring
Located in Hamilton, AU
cut diamonds 0.15 carats. Ring Size O (Australia and UK sizing) or 7 1/4 (US and Canada). The Eloise
Category

21st Century and Contemporary Australian Modern Cluster Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 9k Gold, Yellow Gold

Art Deco Style Square Emerald Diamond Engagement Ring
Located in Santa Barbara, CA
Additional Diamonds: 20 Round Diamonds 0.28 Carats Ring Size: 7.5, sizeable Rise Above Finger: 5mm Ring Face
Category

2010s Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

Captivating 10.56 Carat Square Cushion Amethyst Ring
Located in רמת גן, IL
grade: 20 diamond side stone of 1.60 carat cut: round brilliant color: F-G clarity: I1 - I2 cut grade
Category

2010s Israeli Cocktail Rings

Materials

Amethyst, 14k Gold, White Gold

Peter Suchy EGL Certified 1.61 Carat Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Diamond engagement ring. EGL certified 1.61ct center stone set in a custom made platinum setting
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Square ring by Chopard, in 18-carat white gold, set with 45 diamonds
By Chopard
Located in Monte-Carlo, MC
set of 44 diamonds that delicately adorn this ring, totaling 2.2 carats of pure sparkle. Each diamond
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, White Gold

1.02ctw VS2 Diamond Square Solitaire Engagement Ring 14k White Gold GIA Sz 7
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 1ct Cut - Square Modified Brilliant Color - H
Category

2010s Engagement Rings

Materials

Diamond, White Gold

4.00 Carat Emerald Diamond Princess Gold Cocktail Ring
Located in Stamford, CT
1960’s princess style emerald and diamond engagment ring. 4.00ct center emerald accented with
Category

Mid-20th Century Modern Engagement Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold, Gold

18k White Gold 0.55ct Square Emerald & Round Diamond Milgrain Eternity Band Ring
Located in Montclair, NJ
This marvelous emerald and diamond eternity band ring is crafted in solid 18k white gold and
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

47.33 Carat Aquamarine Diamond Yellow Gold Platinum Cocktail Ring
Located in Stamford, CT
Aqua and diamond cocktail ring. 47.33cts square faceted aquamarine greenish blue center stone set
Category

21st Century and Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, Gold, 18k Gold, Yellow Gold, Platinum

1980s Diamond Sapphire Square Pinwheel Platinum Cocktail Ring
Located in Miami, FL
pinwheel are 20 round faceted diamonds weighing cumulatively appx. 0.80 carats. These diamonds are
Category

1990s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Reinvented Antique 0.80 Carat Bright Green Emerald & Diamond Platinum Ring
Located in Hamilton, AU
Deco style ring holds a 0.80 carat bright green square emerald with a border of round diamonds
Category

21st Century and Contemporary Australian Contemporary Engagement Rings

Materials

Diamond, Emerald, Platinum

3.93 Carat Tanzanite and Diamond Gold Ring
Located in Tucson, AZ
diamonds. 20 Diamonds - round brilliant cut 0.32 carats Clarity: VS-SI Color: H Tanzanite: 3.93 carats
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Tanzanite, White Gold, Gold, 14k Gold

14K White Yellow Gold Square Modified and Round Brilliant Diamond Ring 1.30 Ct
Located in Washington Depot, CT
diamond ring is set with 20 natural square modified brilliant diamonds totaling approx. 1.00 Carat
Category

21st Century and Contemporary Band Rings

Materials

Diamond, 14k Gold

Vintage Circa 1990s 14 Carat Yellow Gold Squared Flat Top Diamond Signet Ring
Located in Hamilton, AU
Forged in 14 carat yellow gold, this dapper ring features a grid setting of sixteen shimmering
Category

20th Century Unknown Modern Three-Stone Rings

Materials

Diamond, Gold, Yellow Gold, 14k Gold

Vintage 1 Carat Sapphire and Diamond 18k White Gold Ring
Located in Jesmond, Newcastle Upon Tyne
Modern Brilliant Round/Eight/Baguette Content 0.96 carat Number of Diamonds 20 Dimensions Width of
Category

Vintage 1950s Unknown Cluster Rings

Materials

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

EGL Certified 1.03 Carat Diamond Platinum Fishtail Engagement Ring
Located in Stamford, CT
Vintage 1950's diamond platinum engagement ring. Fishtail square center set with its original
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Platinum

Contemporary Emerald & Diamond Art Deco-Inspired 18 Carat White Gold Ring
Located in Hamilton, AU
Monica Ring Gem Details The central bright green square emerald cut emerald 0.22 carats and measures
Category

21st Century and Contemporary Australian Contemporary Cluster Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

1.03ct Princess Square Solitaire Diamond Engagement Ring 14k White Gold GIA
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 1.03ct Cut - Modified Square Brilliant Color
Category

2010s Engagement Rings

Materials

Diamond, White Gold

1.03ct Princess Square Solitaire Diamond Engagement Ring 14k White Gold GIA
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 1.03ct Cut - Modified Square Brilliant Color
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Gold

7.26 carats Eternity x Eternity Diamond Ring
Located in Niagara On The Lake, ON
Every square millimeter of this ring is covered in diamonds! One hundred and eighty four diamonds
Category

2010s Canadian Art Deco Wedding Rings

Materials

Diamond, Yellow Gold

Antique Heavy 18ct Gold and Old Cut Diamond Square Cluster Ring
Located in St Helens, GB
A superb antique diamond cluster ring, circa 1910/20. Solid and heavy 18 carat gold example with a
Category

20th Century Cluster Rings

Materials

Diamond, Gold

Vintage Inspired Bright Red Ruby & Diamond Cluster Ring 9 Carat Yellow Gold
Located in Hamilton, AU
The 9 carat gold Harriet Ring imagines a time and a place where love and passion knew no bounds
Category

21st Century and Contemporary Australian Contemporary Cluster Rings

Materials

Diamond, Ruby, Gold, 9k Gold, Yellow Gold

.76 Carat Blue Sapphire Diamond Yellow Gold Cocktail Ring
Located in Stamford, CT
step cut square blue sapphires SI, approx. .36cts 20 round diamonds G-H SI, approx. .15cts Size 6.75
Category

Mid-20th Century Cocktail Rings

Materials

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

2.86 Carat Afghan-Chinese Minor Oil Emerald & Diamond Halo Ring in 18K Gold
By Gad & Co.
Located in Miami, FL
AGL Certified 2.86 Carat Minor Oil Afghan/China Border Origin Emerald and Diamond Halo in 18k White
Category

Vintage 1960s Modern Solitaire Rings

Materials

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

Men's 2.25ctw Diamond Invisible Set Square Top Ring in 18K White Gold
Located in Towson, MD
diamonds, approximately 1.25 carat total weight with matching H/I color and SI1 clarity and twenty (20
Category

Late 20th Century Contemporary Fashion Rings

Materials

Diamond, 18k Gold, White Gold

Georgios Collections 18 Karat Yellow Gold Black Rhodium Diamond Ruby Square Ring
By Georgios Collections Inc
Located in Astoria, NY
Marquize Cut Diamonds, 20 Brilliant Cut diamonds, all total weight of 2.36 Carat, and 4 pear shape Rubies
Category

21st Century and Contemporary Greek Byzantine Dome Rings

Materials

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

Emerald and diamonds ring in 18k gold
Located in PARIS, FR
Stones: Emerald: 1.55 cts, 20 diamonds: 0.12 ct and 4 baguette diamonds: 0.20 ct Material: 18k
Category

Early 2000s Wedding Rings

Materials

Diamond, Emerald, 18k Gold

TJD 1.00 Carat Round & Baguette Diamond 14K White Gold Square Shaped Bridal Set
By TJD
Located in New York, NY
Express your love with this regal and romantic diamond ring. The ring is crafted from 14-karat
Category

21st Century and Contemporary Bridal Rings

Materials

Diamond, White Gold

11.84 Carat Blue Zircon Diamond 14 Karat White Gold Cocktail Ring
By Roshe Jewels
Located in Los Angeles, CA
is surrounded by 20 Round Cut Diamonds that weigh 0.91 carats. (Clarity: SI, Color: F) The total
Category

2010s American Contemporary Cocktail Rings

Materials

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

0.70ct VS2 Square Princess Diamond Solitaire Ring 14k White Gold Size 5.5 GIA
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 0.70ct Cut - Square Brilliant Color - I Clarity
Category

2010s Engagement Rings

Materials

Diamond, White Gold

AIG Certified 3.69 Carat Oval Peridot and 1.98 Carat Diamond Cocktail Ring
Located in Crema, Cremona
shipped together with the ring. 1 natural peridot: 3.69 carats, oval faceted, transparent. 20 natural
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, Peridot, 18k Gold, White Gold

IGI Certified Vintage 17K and 14K White Gold Natural Square Emerald and Diamond
Located in Washington Depot, CT
IGI Certified Vintage 17K and 14K White Gold Natural Square Emerald and Diamond Ring Size 8 This
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Emerald, White Gold

New .50ctw Rose Cut Black & White Diamond Ring, Sterling Silver Square Halo
Located in Greensboro, NC
This ring is a size 8 - 8 1/4, but it can be re-sized up 2 sizes or down 1 size for a $20 fee. Once
Category

21st Century and Contemporary More Rings

Materials

White Diamond, Sterling Silver

New .50ctw Rose Cut Black & White Diamond Ring, Sterling Silver Square Halo
Located in Greensboro, NC
This ring is a size 8 - 8 1/4, but it can be re-sized up 2 sizes or down 1 size for a $20 fee. Once
Category

Late 20th Century Unknown Cocktail Rings

Materials

White Diamond, Sterling Silver

Certified Radiant Cut Diamond and Round Diamond Engagement Ring 18 Carat Gold
Located in Hamilton, AU
Carefully crafted in 18 carat white gold is this vintage inspired diamond ring featuring a
Category

21st Century and Contemporary Australian Contemporary Engagement Rings

Materials

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

Art Deco 5.14 Carat Ceylon Sapphire and 0.96 Carat Diamond Platinum Dress Ring
Located in Jesmond, Newcastle Upon Tyne
European Round Content 0.96 carat Number of Diamonds 20 Dimensions Width of setting 1.56cm/0.61' Height
Category

Vintage 1930s Unknown Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Contemporary 0.31 Carat Natural Emerald & Diamond Band 18 Carat Yellow Gold
Located in Hamilton, AU
Ring Gemstone Details The bright green square emerald cut emerald is 0.31 carats and measures
Category

20th Century Australian Contemporary Wedding Rings

Materials

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

Mens Square Face Diamond Ring with Gold Nugget Shoulders in 14k Yellow Gold
Located in Honolulu, HI
Height: 13.66 mm Total Weight: 6.1 Grams Diamond Count: 20 brilliant cut Diamond Carat Weight: 0.80
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Gold, 14k Gold, Yellow Gold

0.46 Carat Emerald White Diamond 18 Karat White Gold Geometric Cocktail Ring
By Butani
Located in Hong Kong, Kowloon
Emeralds: 0.46 carats 20 Round Diamonds: 0.22 carats Diamond Quality: VS, G/H About Butani: Family-run
Category

1990s Hong Kong Contemporary Cluster Rings

Materials

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

Chopard Happy Diamond Icons 18 Carat White Gold Ring
By Chopard
Located in London, GB
This beautiful Chopard Happy Diamond Icons ring is crafted from 18 carat white gold and features an
Category

Early 2000s Swiss Modern Fashion Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Diamond Ring White Gold 18 Karat
Located in Geneva, CH
Beautiful geometrical 18k white gold ring decorated with a diamonds square shape total weight of
Category

21st Century and Contemporary Modern Fashion Rings

Materials

Diamond, White Gold

Paul Binder 1970 Swiss Square Eternity Ring In 18Kt white Gold With VS Diamonds
By Paul Binder
Located in Miami, FL
Squared half eternity ring designed by Paul Binder. Beautiful modernist piece created at the
Category

Late 20th Century Swiss Modernist Band Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

Paul Binder 1970 Swiss Square Eternity Ring In 18Kt Gold With 1.80 Ctw Diamonds
By Paul Binder
Located in Miami, FL
Squared eternity ring designed by Paul Binder. Beautiful modernist piece created at the jewelry
Category

Vintage 1970s Swiss Modernist Band Rings

Materials

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

Tiffany & Co. Platinum True Cut Diamond Engagement Ring .59ct TW FVS1
By Tiffany & Co.
Located in New York, NY
- See Image Cut: Excellent Polish: Excellent Symmetry: Excellent Side Diamonds: 20 Side Diamond Carat
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

Spectra Fine Jewelry 23.51 Carat Certified Colombian Emerald Diamond Ring
By Spectra Fine Jewelry
Located in New York, NY
impressive near-35-carat size is highly prized, with weights over 20 carats reserved for prestigious jewelry
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

French Engagement Ring Sapphire Diamonds White Gold
Located in Vannes, FR
. This ring is surmounted by a sapphire, set with 20 brilliant cut diamonds, for a weight of 0.18 carats
Category

21st Century and Contemporary French Baroque Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

14 Karat White Gold Amethyst and Diamond Ring Size 5 #15788
Located in Washington Depot, CT
Vintage 14 Karat White Gold Amethyst and Diamond Ring Size 5- This elegant ring features square
Category

20th Century Engagement Rings

Materials

Amethyst, Diamond, Gold, 14k Gold, White Gold

Rubies and Diamond Gold Ring
Located in Geneva, CH
Ring in 18 karat yellow gold set with 20 square cut rubies weigh 4.79 carats total Size 54
Category

21st Century and Contemporary Swiss Contemporary Dome Rings

Materials

Ruby, Gold, 18k Gold, Yellow Gold

Vintage Old European Cut Diamond Navette Ring in Palladium 1.75 Carats Total
Located in Scottsdale, AZ
setting. 20 additional accent diamonds fill the rest of the elongated, marquis shaped ring and are
Category

Mid-20th Century Unknown Edwardian Cocktail Rings

Materials

Diamond, Palladium

Vintage Inspired Deep Blue Baguette Sapphire & Diamond Ring 9 Carat Yellow Gold
Located in Hamilton, AU
round brilliant cut diamonds 0.07 carats. Ring Size O (Australia and UK sizing) or 7 1/4 (US and Canada
Category

21st Century and Contemporary Australian Contemporary Cluster Rings

Materials

Sapphire, Diamond, Yellow Gold, 9k Gold, Gold

Diamond and Ruby Cocktail Ring in 18kt Solid White Gold Statement Ring
By VR Jewels
Located in Houston, TX
Ruby Cocktail Ring with Diamonds Set in 18K Gold featuring natural ruby of 2.05 carats and diamonds
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

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

Victorian Ruby and Diamond Cluster Ring
Located in London, GB
Here we have an 18ct yellow gold ruby and diamond cluster ring from the Victorian era. This multi
Category

Antique 19th Century Victorian Cluster Rings

Materials

Ruby, Pink Diamond, Diamond, Platinum, Yellow Gold, Gold

Vintage circa 1970s Diamond 18 Carat Yellow & White Gold Patterned Signet Ring
Located in Hamilton, AU
gold squared top holding one shimmering round brilliant cut diamond. Her name is The Charles Ring, a
Category

20th Century Unknown Modern Signet Rings

Materials

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

Diamond and emerald cut engagement ring
Located in Dublin, IE
View Available Diamonds 20 ROUND 1.40 Shared Prong View Available Gemstones View Available Diamonds 28
Category

2010s Irish Modern Engagement Rings

Materials

Diamond, Platinum

0.48ctw Blue Sapphire Diamond Ring 14k White Yellow Gold Men's
Located in McLeansville, NC
Gemstone Information: - Natural Sapphires - Total Carats - 0.24ctw Cut - Square Color - Dark Blue
Category

21st Century and Contemporary Band Rings

Materials

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

David Yurman 18K Morganite & Diamond Cushion on point Ring size 5.25
By David Yurman
Located in New York, NY
Type Clarity Eye Clean Gemstone Diamond Carat Weight 0.10 Stone Count 20 Stone Shape round Brilliant
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Morganite, 18k Gold, Yellow Gold

Aquamarine, Diamond & Ruby Ring
Located in San Francisco, CA
Brilliant Cut Aquamarine accented with 8 square cut Rubies totaling 1.44 carats, and 20 round brilliant
Category

Vintage 1970s Unknown Cocktail Rings

Materials

Aquamarine, Diamond, Ruby, Platinum

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20 Carat Diamond Square Ring For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 20 carat diamond square ring for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from gold, yellow gold and 18k gold — can elevate any look. You can easily find a 187 antique edition and 99 modern creations to choose from as well. Making the right choice when shopping for a 20 carat diamond square ring may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. Finding an appealing 20 carat diamond square ring — no matter the origin — is easy, but Tiffany & Co., Coomi and LB Exclusive each produced a popular version that is worth a look. 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 square cut and brilliant cut alternatives. Most of our 20 carat diamond square ring for sale are for women, but there are 81 pieces available to browse for men.

How Much is a 20 Carat Diamond Square Ring?

The price for a 20 carat diamond square ring starts at $110 and tops out at $105,000 with these rings, on average, selling for $2,975.

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.