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Art Deco Style Diamond Emerald Platinum Square Halo Ring
Art Deco Style Diamond Emerald Platinum Square Halo Ring

Art Deco Style Diamond Emerald Platinum Square Halo Ring

Located in Beverly Hills, CA

-inspired ring, crafted in platinum, showcases a .55 carat Asscher cut diamond at its center, graded I in

Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Pink Tourmaline Diamond Ring Vintage Square Cocktail Sz 8 Platinum Fine Jewelry
Pink Tourmaline Diamond Ring Vintage Square Cocktail Sz 8 Platinum Fine Jewelry

Pink Tourmaline Diamond Ring Vintage Square Cocktail Sz 8 Platinum Fine Jewelry

Located in Torrance, CA

. The square design sets this ring apart from the more commonly found round and oval designs. The medium

Category

Mid-20th Century American Modern Cocktail Rings

Materials

Diamond, White Diamond, Tourmaline, Platinum

GIA 10.19 Carat Square Emerald Diamond VVS2 Platinum Ring
GIA 10.19 Carat Square Emerald Diamond VVS2 Platinum Ring

GIA 10.19 Carat Square Emerald Diamond VVS2 Platinum Ring

Located in Chicago, IL

An exquisite platinum ring showcasing exceptional elegance and craftsmanship. The centerpiece of

Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Piaget Ring. Genuine PIAGET PT950 Platinum Square Wedding Band.
Piaget Ring. Genuine PIAGET PT950 Platinum Square Wedding Band.

Piaget Ring. Genuine PIAGET PT950 Platinum Square Wedding Band.

By Piaget

Located in Port Charlotte, FL

Authentic Piaget Band PT950 Square Wedding Band. 2mm wide Size 5 2.6 grams

Category

21st Century and Contemporary Modern Wedding Rings

Materials

Platinum

Platinum Amethyst Ring
Platinum Amethyst Ring

Platinum Amethyst Ring

Located in New York, NY

This elegant ring features a richly colored amethyst with a clean, geometric cut that captures and

Category

Late 20th Century Cocktail Rings

Materials

Amethyst, Platinum

1.32 Carat Square Columbian Emerald & Diamond Ring in Platinum
1.32 Carat Square Columbian Emerald & Diamond Ring in Platinum

1.32 Carat Square Columbian Emerald & Diamond Ring in Platinum

Located in Chicago, IL

insider value. Each piece is final; once sold, it will not be restocked. This Colombian Emerald ring in

Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Emerald, Platinum

Platinum  2 Carat  Square Radiant Cut Diamond Halo  Engagement Ring
Platinum  2 Carat  Square Radiant Cut Diamond Halo  Engagement Ring

Platinum 2 Carat Square Radiant Cut Diamond Halo Engagement Ring

Located in Bethesda, MD

This exquisite platinum estate ring showcases a stunning 2 carat square radiant cut diamond, L

Category

2010s Unknown Engagement Rings

Materials

Diamond, Platinum

2.52 Natural Colombian Square Cut Emerald Diamond Platinum Ring
2.52 Natural Colombian Square Cut Emerald Diamond Platinum Ring

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

Retro 0.65 CTW Diamond Platinum Vintage Square Form Engagement Ring
Retro 0.65 CTW Diamond Platinum Vintage Square Form Engagement Ring

Retro 0.65 CTW Diamond Platinum Vintage Square Form Engagement Ring

Located in Philadelphia, PA

notch motif With high polish finish and milgrain detail Stamped for platinum Circa: 1940s Ring Size: 4 3

Category

Vintage 1940s Retro Engagement Rings

Materials

Diamond, Platinum

GIA Certified 4.01 Carat D Color VS2 Square Emerald Cut Diamond Ring in Platinum
GIA Certified 4.01 Carat D Color VS2 Square Emerald Cut Diamond Ring in Platinum

GIA Certified 4.01 Carat D Color VS2 Square Emerald Cut Diamond Ring in Platinum

By Antinori Fine Jewels

Located in Chicago, IL

GIA Certified 4.01 Carat D Color VS2 Square Emerald Cut Diamond Ring in Platinum Exuding timeless

Category

2010s Italian Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

1 carat Emerald Engagement Ring. Diamond Square Halo Ring Platinum 18k Gold
1 carat Emerald Engagement Ring. Diamond Square Halo Ring Platinum 18k Gold

1 carat Emerald Engagement Ring. Diamond Square Halo Ring Platinum 18k Gold

Located in New York, NY

Type: Emerald Cut Emerald Ring Jewelry Style: Cluster Metal: Platinum Ring Size: 6.5 US, Resizable

Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Emerald, Gold, Yellow Gold, Platinum

Platinum Square Cut Alternating Sapphire & Diamond 5 Stone Channel Band Ring
Platinum Square Cut Alternating Sapphire & Diamond 5 Stone Channel Band Ring

Platinum Square Cut Alternating Sapphire & Diamond 5 Stone Channel Band Ring

Located in Montclair, NJ

- 0.40ctw (exact) Total Carat Weight: 0.88 (exact) Material: Solid .900 Platinum Weight: 4.8 Grams Ring

Category

21st Century and Contemporary Band Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Emerald and Diamond Ring. Square Emerald Diamond Accent Ring Platinum
Art Deco Emerald and Diamond Ring. Square Emerald Diamond Accent Ring Platinum

Art Deco Emerald and Diamond Ring. Square Emerald Diamond Accent Ring Platinum

Located in New York, NY

Jewelry Style: Cluster Metal: Platinum Ring Size: 6.75 US, Resizable Shipping Information: This item is

Category

Vintage 1920s Unknown Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

GIA Certified 11 Carat Square Emerald Cut Diamond Platinum Ring
GIA Certified 11 Carat Square Emerald Cut Diamond Platinum Ring

GIA Certified 11 Carat Square Emerald Cut Diamond Platinum Ring

Located in Chicago, IL

An exceptional and highly refined diamond ring centered by a magnificent 11 carat GIA certified

Category

2010s American Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Art Deco Open Square Diamond and Ruby Platinum Vintage Ring
Art Deco Open Square Diamond and Ruby Platinum Vintage Ring

Art Deco Open Square Diamond and Ruby Platinum Vintage Ring

Located in Montreal, QC

Simply Beautiful! Art Deco Open Square Diamond and Ruby Ring. Hand set with Diamonds and Rubies

Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

French Modern 1.67 Carats Diamonds Platinum Square Daisy Cluster Ring
French Modern 1.67 Carats Diamonds Platinum Square Daisy Cluster Ring

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

Antique Art Deco Platinum Square Cut Ruby Eternity Band
Antique Art Deco Platinum Square Cut Ruby Eternity Band

Antique Art Deco Platinum Square Cut Ruby Eternity Band

Located in Great Neck, NY

crafted in platinum. The ring features natural square cut rubies going around the entire band. The ring is

Category

Vintage 1920s Unknown Art Deco Band Rings

Materials

Ruby, Platinum

Antique Art Deco Platinum Square Cut Ruby Eternity Band
Antique Art Deco Platinum Square Cut Ruby Eternity Band

Antique Art Deco Platinum Square Cut Ruby Eternity Band

Located in Great Neck, NY

is crafted in platinum. There are square cut rubies going around the entire ring and the sides of the

Category

Vintage 1920s Unknown Art Deco Band Rings

Materials

Ruby, Platinum

2.08ct H VVS1 Square Emerald Cut Diamond Platinum Engagement Ring
2.08ct H VVS1 Square Emerald Cut Diamond Platinum Engagement Ring

2.08ct H VVS1 Square Emerald Cut Diamond Platinum Engagement Ring

By Tobi Gem Setting

Located in London, GB

This spectacular engagement ring features a gorgeous 2.08 carat square cut emerald, certified H in

Category

2010s English Modern Engagement Rings

Materials

Diamond, Platinum

Estate Tiffany & Co. Platinum Square Diamond Engagement Ring & Wedding Band Set
Estate Tiffany & Co. Platinum Square Diamond Engagement Ring & Wedding Band Set

Estate Tiffany & Co. Platinum Square Diamond Engagement Ring & Wedding Band Set

By Tiffany & Co.

Located in Santa Barbara, CA

A classic and chic Tiffany & Co. platinum wedding band set. Showcasing a spectacular engagement

Category

21st Century and Contemporary Contemporary Solitaire Rings

Materials

Diamond, Platinum

Art Deco style 1.64 carat diamond emerald platinum square ring
Art Deco style 1.64 carat diamond emerald platinum square ring

Art Deco style 1.64 carat diamond emerald platinum square ring

Located in Beverly Hills, CA

This modern Art Deco-inspired platinum ring showcases a stunning 1.64 carat transitional cut

Category

20th Century Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Tanzanite Diamond Platinum Ring
Tanzanite Diamond Platinum Ring

Tanzanite Diamond Platinum Ring

Located in Beverly Hills, CA

sparkle to the ring. Hand-fabricated in platinum and ready to be worn! Ring Size: 6.25 Weight: 11.3

Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Tanzanite, Platinum

GIA Certified 1.26 Carat Square Emerald Cut 18k Platinum Ring
GIA Certified 1.26 Carat Square Emerald Cut 18k Platinum Ring

GIA Certified 1.26 Carat Square Emerald Cut 18k Platinum Ring

Located in Chicago, IL

center, the ring features a Flanders / Elara Cut-Cornered Square Brilliant Cut diamond weighing 1.26 ct

Category

Vintage 1950s American Engagement Rings

Materials

Aquamarine, Diamond, Platinum

Contemporary 1.47 CTW Cushion Cut Ruby Diamond Platinum Square Halo Ring
Contemporary 1.47 CTW Cushion Cut Ruby Diamond Platinum Square Halo Ring

Contemporary 1.47 CTW Cushion Cut Ruby Diamond Platinum Square Halo Ring

Located in Philadelphia, PA

for platinum Inscribed with carat weight Circa: 2000s Ring Size: 5 1/4 and sizable Measures north to

Category

21st Century and Contemporary Contemporary Cluster Rings

Materials

Diamond, Ruby, Platinum

Emerald Diamond Platinum Ring
Emerald Diamond Platinum Ring

Emerald Diamond Platinum Ring

$3,500Sale Price|20% Off

Emerald Diamond Platinum Ring

Located in San Francisco, CA

A contemporary Deco style ring featuring a square cut 2.25 carat emerald in a platinum setting

Category

21st Century and Contemporary Art Deco More Rings

Materials

Diamond, Emerald, Platinum

Antique Art Deco Platinum Square Cut Ruby Eternity Band - Size 6
Antique Art Deco Platinum Square Cut Ruby Eternity Band - Size 6

Antique Art Deco Platinum Square Cut Ruby Eternity Band - Size 6

Located in Great Neck, NY

Beautiful Antique Art Deco Platinum Square Cut Ruby Eternity Band - Size 6. This beautiful Art Deco

Category

Vintage 1930s Art Deco Wedding Rings

Materials

Ruby, Platinum

Art Deco Platinum Aquamarine Ring
Art Deco Platinum Aquamarine Ring

Art Deco Platinum Aquamarine Ring

Located in Flushing, NY

Art Deco Platinum Aquamarine Ring Approximate Dimensions: 6.5 (Ring Size) 2.3 cm (Width) 17.88 mm

Category

20th Century Engagement Rings

Materials

Aquamarine, Platinum

Antique 18ct Gold & Platinum, Edwardian era Square Shaped Diamond Ring
Antique 18ct Gold & Platinum, Edwardian era Square Shaped Diamond Ring

Antique 18ct Gold & Platinum, Edwardian era Square Shaped Diamond Ring

Located in Brighton, GB

Antique Diamond Ring 18ct Yellow Gold & Platinum Tested Circa 1910 Introducing a stunning

Category

Early 20th Century European Edwardian Engagement Rings

Materials

Diamond, Gold, 18k Gold, Platinum

Platinum 1.03ct Diamond Ring #5260
Platinum 1.03ct Diamond Ring #5260

Platinum 1.03ct Diamond Ring #5260

By LB Exclusive

Located in Southampton, PA

An understated design makes this luxury piece ideal for everyday wear. Set in Platinum, inset

Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

Tiffany & Co. Diamond Square Sapphire Platinum Eternity Band Ring Size 4.75
Tiffany & Co. Diamond Square Sapphire Platinum Eternity Band Ring Size 4.75

Tiffany & Co. Diamond Square Sapphire Platinum Eternity Band Ring Size 4.75

By Tiffany & Co.

Located in Simpsonville, SC

The Tiffany & Co. Vintage Diamond Square Sapphire Platinum Eternity Band Ring is a timeless symbol

Category

20th Century Band Rings

Materials

White Diamond, Blue Sapphire, Platinum

Tiffany & Co. 2.16 ct Platinum Lucida Square Brilliant Cut Diamond Ring
Tiffany & Co. 2.16 ct Platinum Lucida Square Brilliant Cut Diamond Ring

Tiffany & Co. 2.16 ct Platinum Lucida Square Brilliant Cut Diamond Ring

By Tiffany & Co.

Located in Chicago, IL

Tiffany & Co. 2.16 ct Platinum Lucida Square Brilliant Cut Diamond Solitaire Engagement Ring is a

Category

2010s American Band Rings

Materials

Diamond, Platinum

0.43 Carat Square Shape Emerald Diamond Cocktail Ring Platinum in Stock
0.43 Carat Square Shape Emerald Diamond Cocktail Ring Platinum in Stock

0.43 Carat Square Shape Emerald Diamond Cocktail Ring Platinum in Stock

Located in Boca Raton, FL

Material: Platinum Gemstone details: Approx. 0.43ctw square shaped Emerald center gemstone Diamond

Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, White Diamond, Emerald, Platinum

GIA Certified 6.01 Carat Square Emerald Cut Diamond Ring in Platinum
GIA Certified 6.01 Carat Square Emerald Cut Diamond Ring in Platinum

GIA Certified 6.01 Carat Square Emerald Cut Diamond Ring in Platinum

By Antinori Fine Jewels

Located in Chicago, IL

Crafted in platinum, this spectacular ring showcases a 6.01 carat square emerald cut diamond

Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Aquamarine Diamond Platinum Ring
Aquamarine Diamond Platinum Ring

Aquamarine Diamond Platinum Ring

Located in Geneva, CH

Exquisite Aquamarine square step cut ring, a true embodiment of elegance and sophistication

Category

Late 20th Century Aesthetic Movement Fashion Rings

Materials

Aquamarine, Diamond, Gold, White Gold, Platinum

Tiffany & Co. 1.24 ct Platinum Lucida Square Brilliant Cut Diamond Ring
Tiffany & Co. 1.24 ct Platinum Lucida Square Brilliant Cut Diamond Ring

Tiffany & Co. 1.24 ct Platinum Lucida Square Brilliant Cut Diamond Ring

By Tiffany & Co.

Located in Chicago, IL

An iconic Tiffany & Co. Lucida diamond engagement ring, showcasing a 1.24 carat Lucida cut diamond

Category

2010s American Band Rings

Materials

Diamond, Platinum

Platinum Ring with Round Diamond Center in a Square Setting - Size 4.75
Platinum Ring with Round Diamond Center in a Square Setting - Size 4.75

Platinum Ring with Round Diamond Center in a Square Setting - Size 4.75

Located in Scottsdale, AZ

: 3.66g - Ring Size: 4.75 - Materials: - Metal Type: Platinum ---------------------------------------------

Category

20th Century Wedding Rings

Materials

Diamond, Platinum

Antique Art Deco Platinum Natural Sapphire Square Cut Eternity Band
Antique Art Deco Platinum Natural Sapphire Square Cut Eternity Band

Antique Art Deco Platinum Natural Sapphire Square Cut Eternity Band

Located in Great Neck, NY

Beautiful Antique Art Deco Platinum Natural Sapphire Square Cut Eternity Band. This classic

Category

Vintage 1920s Art Deco Wedding Rings

Materials

Blue Sapphire, Platinum

Platinum 1.08ct Diamond Ring MF39-101625
Platinum 1.08ct Diamond Ring MF39-101625

Platinum 1.08ct Diamond Ring MF39-101625

By LB Exclusive

Located in Southampton, PA

Square cut Diamonds with a total weight of 1.08 carats give this ring a unique design that will

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Platinum

Platinum 0.50ct GIA Graded Fancy Yellow Diamond Stackable Squared Band Ring
Platinum 0.50ct GIA Graded Fancy Yellow Diamond Stackable Squared Band Ring

Platinum 0.50ct GIA Graded Fancy Yellow Diamond Stackable Squared Band Ring

Located in Montclair, NJ

: Solid .950 Platinum Weight: 10.83 Grams Ring Size: 6.0 (Fitted on a finger. We can NOT custom size this

Category

21st Century and Contemporary Band Rings

Materials

Yellow Diamond, Platinum

2 Carat Natural Square Emerald & 0.65 Ct Diamond Ring in Platinum
2 Carat Natural Square Emerald & 0.65 Ct Diamond Ring in Platinum

2 Carat Natural Square Emerald & 0.65 Ct Diamond Ring in Platinum

Located in New York, NY

2 Carat Natural Square Emerald & 0.65 Ct Diamond Ring In Platinum size 3.75 i am selling this

Category

2010s Solitaire Rings

Materials

Diamond, Emerald, Platinum

GIA Certified 3.02 Carat Asscher Cut Square Emerald Engagement Platinum Ring
GIA Certified 3.02 Carat Asscher Cut Square Emerald Engagement Platinum Ring

GIA Certified 3.02 Carat Asscher Cut Square Emerald Engagement Platinum Ring

By Simon Ardem

Located in New York, NY

Diamond Platinum ring with GIA certificate, no. 2165724127. Details are: Center stone: 3.02 / H VS1

Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA 5 Carat Square Radiant Cut Diamond Platinum Ring
GIA 5 Carat Square Radiant Cut Diamond Platinum Ring

GIA 5 Carat Square Radiant Cut Diamond Platinum Ring

By Antinori Fine Jewels

Located in Chicago, IL

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 Byard Brogan 0.36 CTW Diamond Platinum Square Form Engagement Ring
Art Deco Byard Brogan 0.36 CTW Diamond Platinum Square Form Engagement Ring

Art Deco Byard Brogan 0.36 CTW Diamond Platinum Square Form Engagement Ring

Located in Philadelphia, PA

flaring cathedral shoulders Stamped for platinum With maker's mark for Byard Brogan Circa: 1930 Ring Size

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Tiffany & Co. 1.19 ct Platinum Lucida Square Brilliant Cut Diamond Ring
Tiffany & Co. 1.19 ct Platinum Lucida Square Brilliant Cut Diamond Ring

Tiffany & Co. 1.19 ct Platinum Lucida Square Brilliant Cut Diamond Ring

By Tiffany & Co.

Located in Chicago, IL

Tiffany & Co. engagement ring you've described features a 1.19 carat Lucida Square Brilliant Cut

Category

2010s American Band Rings

Materials

Diamond, Platinum

Tiffany & Co. Platinum 1.19 ct Lucida Square Brilliant Cut Diamond Ring
Tiffany & Co. Platinum 1.19 ct Lucida Square Brilliant Cut Diamond Ring

Tiffany & Co. Platinum 1.19 ct Lucida Square Brilliant Cut Diamond Ring

By Tiffany & Co.

Located in Chicago, IL

Tiffany & Co. Platinum 1.19 ct Lucida Square Brilliant Cut Diamond Solitaire Engagement Ring

Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Platinum

Soft Square Diamond Halo Engagement Ring. 1.10ct Cushion Cut Platinum Ring G SI1
Soft Square Diamond Halo Engagement Ring. 1.10ct Cushion Cut Platinum Ring G SI1

Soft Square Diamond Halo Engagement Ring. 1.10ct Cushion Cut Platinum Ring G SI1

Located in New York, NY

contrast, further elevating the ring’s visual appeal. Crafted in luxurious platinum, this ring is designed

Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Art Deco Style Square Emerald Diamond Engagement Ring
Art Deco Style Square Emerald Diamond Engagement Ring

Art Deco Style Square Emerald Diamond Engagement Ring

Located in Santa Barbara, CA

A breathtaking grass-green Colombian emerald engagement ring wows with a striking Art Deco style

Category

2010s Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

Platinum Burma Ruby Band Ring
Platinum Burma Ruby Band Ring

Platinum Burma Ruby Band Ring

Located in New York, NY

Plaitnum 7 ruby band, ruby weighing approx. 2.1 cts ring size 6 3/4, weight 2.6 dwt

Category

20th Century Unknown More Rings

Materials

Ruby, Platinum

GIA Certified 4.02 Carat Asscher Cut Square Diamond Engagement Platinum Ring
GIA Certified 4.02 Carat Asscher Cut Square Diamond Engagement Platinum Ring

GIA Certified 4.02 Carat Asscher Cut Square Diamond Engagement Platinum Ring

Located in Aventura, FL

4.02ct Asscher cut Natural VS1 clarity Diamond Ring is made in Platinum, This ring will be perfect for

Category

21st Century and Contemporary American Modernist Bridal Rings

Materials

Diamond, Platinum

Art Deco 1.35 Carats Diamond Platinum Square Form Vintage Engagement Ring
Art Deco 1.35 Carats Diamond Platinum Square Form Vintage Engagement Ring

Art Deco 1.35 Carats Diamond Platinum Square Form Vintage Engagement Ring

Located in Philadelphia, PA

bright. Stamped for platinum. Signed with maker's mark for Traub Mfg. Co.. Circa: 1930's. Ring size: 5 1

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Estate Platinum Pave Round Princess Diamond Square Ruby Wide Band Ring 2.55ctw
Estate Platinum Pave Round Princess Diamond Square Ruby Wide Band Ring 2.55ctw

Estate Platinum Pave Round Princess Diamond Square Ruby Wide Band Ring 2.55ctw

Located in Winter Springs, FL

An elegant contemporary band ring done in platinum and both pave and channel set with

Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, Ruby, Platinum

  • 1
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Square Platinum Ring For Sale on 1stDibs

Surely you’ll find the exact square platinum 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 platinum, gold and 18k gold — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. Making the right choice when shopping for a square platinum ring may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. 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. Creating a square platinum ring has been a part of the legacy of many jewelers, but those produced by Tiffany & Co., EMD Diamonds and Antinori Fine Jewels are consistently popular. While most can agree that any square platinum ring from our collection can easily elevate most outfits, but the choice of a diamond version from the 954 available is guaranteed to add a special touch to your ensemble. Today, if you’re looking for a square cut version of this piece and are unable to find the perfect match, our selection also includes emerald cut and old european cut alternatives. Finding a square platinum ring for sale for women should be easy, but there are 411 pieces available to browse for unisex as well as men, too.

How Much is a Square Platinum Ring?

The price for a square platinum ring starts at $151 and tops out at $2,200,000 with these rings, on average, selling for $6,696.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And 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

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.  

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.