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Platinum Square Diamonds

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Bespoke GIA Square Pear 19.38 Carat Yellow White Platinum Diamond Drop Earrings
By Hasbani Diamonds
Located in London, GB
the outer halo and rest of the Drop earrings. These Stunning pair of Diamond Drop Earrings in Platinum
Category

2010s British Modern Drop Earrings

Materials

Diamond, White Diamond, Yellow Diamond, Platinum

White Diamond Square Fashion Ring in Platinum
Located in Los Angeles, CA
Beautiful fashion ring with 1.97 ct. good quality white and bright diamond squares in a handmade
Category

21st Century and Contemporary Fashion Rings

Materials

White Diamond, Platinum

Tiffany & Co. Square Diamond Platinum Engagement Ring
By Tiffany & Co.
Located in Holland, PA
Platinum Diamond Engagement Ring by Tiffany & Co. With 1x Diamond 0.22ct clarity VS2, color D Cut
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

White Diamond and Ruby Square Dangle Earrings in Platinum
Located in Los Angeles, CA
Beautiful 2.14 ct. good quality white diamond rounds and 1.65 ct. ruby squares. Handmade in
Category

21st Century and Contemporary Dangle Earrings

Materials

White Diamond, Ruby, Platinum

White Diamond and Emerald Square Dangle Earrings in Platinum
Located in Los Angeles, CA
Beautiful 1.09 ct. good quality white diamond rounds and 0.42 ct. emerald squares. Handmade in
Category

21st Century and Contemporary Dangle Earrings

Materials

White Diamond, Emerald, Platinum

Platinum 2.03ct E/VVS2 Square Modified Diamond Ring & 1.60ct Triangle Diamonds
Located in London, GB
Platinum 2.03ct E colour VVS2 clarity square modified GIA natural diamond 3-stone ring set with 2
Category

2010s British Solitaire Rings

Materials

Diamond, Platinum

Sophia D. Square Cut All Diamond Platinum Earrings
By Sophia D
Located in New York, NY
Gorgeous platinum square cut diamond earrings weighing 3.02 carats and surrounded by diamonds
Category

2010s American Art Deco Dangle Earrings

Materials

Diamond, Platinum

Solitaire Platinum Ring, GIA Certified Square Modified Brilliant Cut Diamond
Located in Surfside, FL
GIA certified square modified brilliant cut diamond 4.67 carat ( F color, VS2 clarity) solitaire
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

Belperron Mid-Century Platinum Square-Cut Diamond Fan Earrings
By Suzanne Belperron
Located in New York, NY
four square-cut diamonds weighing app. 3.95 carats total (by formula), extending long baguette-cut
Category

Mid-20th Century French Modern Clip-on Earrings

Materials

Diamond, Platinum

Platinum Solitaire Diamond Ring Set with 0.62ct H/VVS2 Square Modified Diamond
By Unbranded
Located in London, GB
An elegant Diamond ring for your engagement, this Platinum ring features a 0.62ct Square Brilliant
Category

2010s British Engagement Rings

Materials

Diamond, Platinum

Vintage GIA 1.30 Carat Square Cut Diamond Platinum Solitaire Ring
Located in Beverly Hills, CA
One Vintage GIA 1.30 Carat Square Cut Diamond Platinum Solitaire Ring. Featuring one GIA cut
Category

1990s Solitaire Rings

Materials

Diamond, White Diamond, Brown Diamond, Platinum

GIA Certified 0.51 Carat Solitaire Square Cut Diamond Ring in Platinum
Located in London, GB
This Alluring ring from our Treasure Collection features a spectacular 0.51 Carat Solitaire Square
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Platinum

GIA Certified 0.60 Carat Solitaire Square Brilliant Diamond Ring in Platinum
Located in London, GB
This immaculate ring features a Square Modified Brilliant Diamond at its centre, held in a claw
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Platinum

Contemporary 1.03 CTW Square Step Cut Diamond Platinum Channel Band Ring
Located in Philadelphia, PA
Featuring five square step-cut diamonds channel set to front Weighing 1.03 carats total - H/J color
Category

21st Century and Contemporary Contemporary Band Rings

Materials

Diamond, Platinum

Peter Suchy EGL Certified 1.43 Carat Square Diamond Platinum Stud Earrings
By Peter Suchy
Located in Stamford, CT
square cut diamonds set in simple 4 prong platinum basket settings. Designed and crafted in the Peter
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Platinum

Platinum Setting Fancy Engagement Ring with Center Square Emerald & Diamonds
By Diana M. Jewels
Located in New York, NY
platinum setting with 1.30ct of micropave round diamonds.
Category

21st Century and Contemporary Engagement Rings

Materials

Emerald, Diamond, White Gold, Platinum

Vintage Square Sapphire Diamond Engagement Ring .96ct Platinum Antique Deco
Located in Dearborn, MI
Genuine Original Antique from 1930's-1940's .96ct Sapphire Diamond Platinum Art Deco Engagement
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Peter Suchy .75 Carat Square Cut Diamond Platinum Wedding Band Ring
By Peter Suchy
Located in Stamford, CT
Five square cut diamond common prong wedding band platinum ring. Created in the Peter Suchy
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

Vintage Platinum 10.31ct AGL Square Colombian Emerald w/ Diamond Cocktail Ring
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Emerald - Square Cut - Minor Oil - Dual Prong Set - Lively Bright
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Emerald, Platinum

Art Deco Platinum and Square Cut Diamond Eternity Band 3ctw
Located in Narberth, PA
A beautiful diamond eternity band from the Art Deco (ca1930) era! Made of platinum, this feminine
Category

Vintage 1930s Unknown Art Deco Band Rings

Materials

Diamond, Platinum

Modern Diamonds Platinum Square Engagement Daisy Ring
Located in Poitiers, FR
Ring in platinum, dog head hallmark. This splendid daisy ring has a square shape and is set with
Category

21st Century and Contemporary French Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

1.01 CTW Square Step Cut Diamond Platinum Channel Band Unisex Ring
Located in Philadelphia, PA
Featuring five square step cut diamonds weighing 1.01 carats total. I color with VS2 clarity
Category

1990s Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

Peter Suchy GIA Certified 2.04 Carat Square Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Square cut diamond engagement ring. This GIA certified 2.04 carat square emerald cut center diamond
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA 1.18 Square Brilliant Cut Carat Diamond Halo Platinum Engagement Ring
By Hearts On Fire
Located in Stamford, CT
Hearts on Fire Dream Transcend diamond halo engagement ring. The GIA certified corner cut, squared
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Contemporary 0.72 CTW Square Step Cut Diamond Platinum Five Stone Channel Band
Located in Philadelphia, PA
Featuring square step cut diamonds channel set to front Weighing 0.72 carats total - G/H color with
Category

21st Century and Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

Square Radiant Cut Diamond Dangle Platinum Earrings
Located in Miami, FL
Style: Drop Earrings Metal: Platinum Metal Purity: 950 ​​​​​​​Main Stones: 4 Stones Main Stones
Category

Early 2000s English Art Deco Dangle Earrings

Materials

Diamond, Platinum

2000s Platinum with 6.65 Carat Square Cut Diamond Wide Half Wedding Band
Located in New York, NY
The beautiful ring is finely crafted in platinum with square cut diamonds weighing approximately a
Category

Early 2000s American Band Rings

Materials

Diamond, Platinum

Vintage Platinum 5.2ctw AGL Square Step Colombian Emerald & Diamond Platter Ring
Located in Montclair, NJ
This breathtaking vintage emerald and diamond cocktail ring features a large, GIA certified
Category

21st Century and Contemporary Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Certified 1.36 Carat Square Padparadscha Sapphire and Diamond Ring in Platinum
Located in London, GB
The centre stone of this elegant ring is a Square Modified GCS Certified Natural Padparadscha
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Padparadscha Sapphire , Platinum

Art Deco Platinum Antique Carré Square Cut Natural Diamond Eternity Band Ring
Located in Baltimore, MD
Art Deco Platinum Antique Carré Square Cut Natural Diamond Eternity Band Wedding Ring Metal
Category

Early 20th Century Art Deco Band Rings

Materials

Diamond, Platinum

GIA Certified 2.56 Carat Square Cut Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
Three-stone diamond engagement ring. Square cut GIA certified center stone with two square cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

3 Carat GIA Certificate G Color Cushion Diamond Platinum Bespoke Engagement Ring
By Hasbani Diamonds
Located in London, GB
of 0.25 carat round brilliant cut. This is a stunning diamond engagement ring set in platinum with
Category

2010s British Modern Engagement Rings

Materials

Diamond, Platinum

Platinum Soft Square Unisex Sculpture Ring with Diamonds
By Thomas Kurilla Jewelry
Located in New York, NY
Platinum Soft Square Unisex Sculpture Ring with Diamonds. Tiffany Designer , Thomas Kurilla created
Category

2010s American Contemporary Band Rings

Materials

Diamond, Platinum

3 Carat GIA Certificate E Color Cushion Diamond Platinum Bespoke Engagement Ring
By Hasbani Diamonds
Located in London, GB
stunning diamond engagement ring set in platinum with 950 British Hallmarked. Colour: E Clarity: VS2
Category

2010s British Modern Engagement Rings

Materials

Diamond, Platinum

Vintage Art Deco Diamond Platinum Square Link Bracelet
Located in Miami, FL
This diamond & platinum Bracelet with a refreshing and delicate Art deco Geometric design. This
Category

Vintage 1940s Art Deco Tennis Bracelets

Materials

Diamond, Platinum

French Art Deco Platinum and Diamond Square Ring
Located in Amsterdam, NL
A platinum ring set with four old-cut diamonds in a square. Each stone is mille-griffe set; and on
Category

Vintage 1920s French Art Deco Engagement Rings

Materials

White Diamond, Platinum

French Square Platinum Art Deco Ring with Diamonds
Located in Amsterdam, NL
A platinum ring set with four old cut diamonds in a square each set in a mille griffe border with
Category

Vintage 1920s French Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

1960s Diamond Platinum Square Cut Half Band Ring
Located in Narberth, PA
This vintage diamond half band from the 1960s is simply gorgeous! The ring is made of platinum and
Category

Vintage 1960s Contemporary Band Rings

Materials

Diamond, Platinum

Nally Square Shaped Diamond Platinum Eternity Band Ring
Located in New York, NY
Beautiful 18 square shape diamonds set in platinum with common prong style. Each diamond is 0.29
Category

2010s American Contemporary Wedding Rings

Materials

Diamond, Platinum

1980s Diamond Sapphire Square Pinwheel Platinum Cocktail Ring
Located in Miami, FL
This ring will make a statement without uttering a word! This pinwheel design, cast in platinum
Category

1990s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Sapphire and Diamond Platinum Square Ring
Located in Beverly Hills, CA
One Art Deco Sapphire and Diamond Platinum Square Ring. Featuring one oval mixed cut sapphire
Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Diamond Square Sapphire Hinged Platinum Bracelet
Located in Stamford, CT
Original 1920s handmade diamond and sapphire solid hinged Platinum bracelet. Complete with hand
Category

Vintage 1920s Art Deco Retro Bracelets

Materials

Diamond, Sapphire, Platinum

Pink Tourmaline Diamond Ring Vintage Square Cocktail Sz 8 Platinum Fine Jewelry
Located in Torrance, CA
Square cut pink tourmaline measures 9mm x 7.5mm (estimated at 2.50 carats). Round brilliant cut
Category

Mid-20th Century American Modern Cocktail Rings

Materials

White Diamond, Tourmaline, Diamond, Platinum

Platinum Square Emerald Cut Diamond Engagement Ring GIA Certified
Located in Scottsdale, AZ
Designer: custom design Material: platinum mounting Center Diamond: 1 square emerald cut = 1.01ct
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA 5 Carat Square Radiant Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
Gorgeous ring with a GIA diamond, square radiant cut, 5 carat, e color and vvs2 in clarity! A
Category

2010s Italian Modern Three-Stone Rings

Materials

Diamond, White Diamond, Platinum

Art Deco Inspired Sapphire Diamond Platinum Square Cocktail Ring
Located in Beverly Hills, CA
One Art Deco Inspired Sapphire Diamond Platinum Square Cocktail Ring. Featuring four rectangular
Category

2010s American Cocktail Rings

Materials

Diamond, Sapphire, Platinum

1.32 Carat Square Columbian Emerald & Diamond Ring in Platinum
Located in Chicago, IL
This Colombian Emerald ring in platinum is a perfect birthday or anniversary gift for the glamorous
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Emerald, Platinum

Art Deco Inspired Diamond and Emerald Platinum Square Ring
Located in Beverly Hills, CA
One Art Deco Inspired Diamond and Emerald Platinum Square Ring. Featuring 16 old mine cut diamonds
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Art Deco Inspired Diamond and Ruby Platinum Square Ring
Located in Beverly Hills, CA
One Art Deco Inspired Diamond and Ruby Platinum Square Ring. Featuring 16 old mine cut diamonds
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, White Diamond, Ruby, Platinum

2.52 Natural Colombian Square Cut Emerald Diamond Platinum Ring
By Steven Fox Jewelry
Located in Greenwich, CT
This extraordinary 2.52 carat natural no oil Colombian square cut emerald ring is simply
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Emerald, Platinum

Art Deco Inspired Diamond and Sapphire Platinum Square Ring
Located in Beverly Hills, CA
One Art Deco Inspired Diamond and Sapphire Platinum Square Ring. Featuring 16 old mine cut diamonds
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Square Diamond Illusion Button Earrings with Center Pink Diamond in Platinum
Located in La Jolla, CA
Square Diamond Illusion Earrings with Baguettes and Rounds and center Pink Diamond in Platinum
Category

21st Century and Contemporary North American Stud Earrings

Materials

Pink Diamond, 18k Gold, White Gold, Platinum

1.09 Carat Natural Square-Cut Emerald Three-Stone Ring, Platinum
Located in New York, NY
A 1.09 Carat Square-Cut Emerald Three Stone Ring made in Platinum. Diamond Weight: 0.32 carats
Category

20th Century Three-Stone Rings

Materials

Emerald, Diamond, Platinum

Amavida Platinum Square Halo Engagement Mounting
By Gabriel & Co.
Located in Stamford, CT
If you are looking for a one of a kind platinum diamond engagement ring, look no further! This
Category

2010s Engagement Rings

Materials

Diamond, Platinum

Platinum Tennis Bracelet 30ct. Square & Brilliant Diamonds, Estate Sultan Oman
Located in Antwerp, BE
Magnificent Platinum Tennis Bracelet 30 ct. Square and Brilliant Diamonds , Estate Sultan Oman
Category

20th Century European Artisan Tennis Bracelets

Materials

Diamond, Platinum

French Modern 1.67 Carats Diamonds Platinum Square Daisy Cluster Ring
Located in Poitiers, FR
Ring in platinum, dog head hallmark. This splendid daisy ring has a square shape and is set with
Category

21st Century and Contemporary French Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

4.11 Cut-Cornered Square Step Cut Diamond Platinum Drop Earrings
By Steven Fox Jewelry
Located in Greenwich, CT
With modern and graphic lines, these 4.11 carat cut-cornered square step cut diamond platinum
Category

2010s North American Modern Drop Earrings

Materials

Diamond, Platinum

Square Cut Diamond Eternity Wedding Band
Located in New York, NY
Eternity wedding band finely crafted in platinum square cut diamonds weighing a total of
Category

1990s Wedding Rings

Materials

Diamond, Platinum

Square Emerald Diamond Engagement Ring, circa 1920s
Located in NEW ORLEANS, LA
Beautiful platinum and diamond engagement ring, circa the1920s. A square emerald diamond is center
Category

Vintage 1920s Engagement Rings

Materials

Diamond, Platinum

Authentic Tiffany & Co. Platinum Lucida Square Brilliant Cut Diamond Ring
By Tiffany & Co.
Located in Rome, IT
Authentic Tiffany & Co. Platinum 1.19 ct Lucida Square Brilliant Cut Diamond Solitaire Engagement
Category

2010s Unknown Contemporary Solitaire Rings

Materials

Diamond, Emerald, Platinum

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Platinum Square Diamonds For Sale on 1stDibs

On 1stDibs, there are many options to choose from in our inventory of platinum square diamonds. Frequently made of Platinum, Gold and 18k Gold, these items were constructed with great care. Our collection of these items for sale includes 367 vintage editions and 225 modern creations to choose from as well. Our inventory has long been popular, and it includes earlier versions that date to the 19th Century and newer variations that were made as recently as the 21st Century. Art Deco and Contemporary are consistently popular styles when it comes to platinum square diamonds. Many examples in our inventory of these items are appealing no matter their origins, but Tiffany & Co., Oscar Heyman and Sophia D produced popular versions that are worth a look. Today, if you’re looking for square cut platinum square diamonds and are unable to find the perfect match, our selection also includes emerald cut and round cut alternatives. Most of our platinum square diamonds for sale are for women, but there are 180 pieces available to browse for men.

How Much are Platinum Square Diamonds?

Prices for platinum square diamonds can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $396 and can go as high as $525,000, while platinum square diamonds, on average, fetch $8,585.
Questions About Platinum Square Diamonds
  • 1stDibs ExpertOctober 12, 2021
    A square diamond is sometimes known as a princess-cut diamond. Princess-cut diamonds have only been in their current form since the 1960s, making them a relatively new diamond shape. The beauty, flair, and edge of a square diamond are well-known. Shop a range of antique and vintage diamond jewelry on 1stDibs today.
  • There are a few diamond cuts that can be considered square diamond rings. Here is a list: 1. Emerald cut 2. Asscher cut 3. Princess cut 4. Radiant.cut 5. Cushion cut