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River-Rose-Twist-Flow Bracelet with Diamond 18 Karat
By JeweLyrie
Located in Paterson, NJ
. • River Rose twist wave flow bracelet • Total nine 2mm round diamond, 0.135 carat, G+ color, VS-SI clarity
Category

2010s American Contemporary Link Bracelets

Materials

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

Classic American 0.60 Carat Diamond Engagement Ring in Platinum
Located in Boston, MA
quality 0.60 carat European cut diamond. Secured by four squared polished platinum prongs, the diamond is
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

Art Deco Floral Filigree 0.20 Carat Diamond White Gold Ring
Located in Boston, MA
impeccable quality. Centering this ring is a single 0.20 carat old European cut diamond set in a squared
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, White Gold

4 Carat Square Cut Colombian Emerald Pendant Set in White Gold
Located in London, GB
This square cut, 4 carat Colombian emerald pendant is channel set in 18K white gold, giving the
Category

2010s Colombian Contemporary Pendant Necklaces

Materials

Diamond, White Gold

4 Carat Square Cut Colombian Emerald Pendant Set in White Gold
Located in London, GB
This square cut, 4 carat Colombian emerald pendant is channel set in 18K white gold, giving the
Category

2010s Colombian Contemporary Pendant Necklaces

Materials

Diamond, White Gold

Square Cut, 4 Carat Colombian Emerald Pendant Set in 18 Karat White Gold
Located in London, GB
This square cut, 4 carat Colombian emerald pendant is channel set in 18K white gold, giving the
Category

2010s Colombian Contemporary Pendant Necklaces

Materials

Diamond, White Gold

1.12 Carats Round and Square Diamond Platinum Anniversary Band Ring
Located in Philadelphia, PA
Band ring features channel set square step cut diamonds Weighing in total approximately 1.00 carat
Category

2010s Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

Contemporary 1.03 Carats Square Step Cut Diamond Platinum Stacking Band Ring
Located in Philadelphia, PA
Band ring is channel set to front by five square step cut diamonds Weighing in total approximately
Category

2010s Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

White Gold Green Tourmaline and Diamond Ring, 14 Karat Square 2.20 Carat
Located in Greensboro, NC
Tourmaline Color: Green Cut: Square Step Carat: 1.70ct Natural Diamonds Clarity: VS1 - VS2 Color: F - G
Category

20th Century Unknown Solitaire Rings

Materials

Diamond, Tourmaline, 14k Gold, White Gold

1.12 Carat Square Emerald Cut Diamond Band Ring
Located in Miami, FL
1.12 carat of square emerald cut diamond are affixed to a platinum shared-prong shank. This
Category

2010s Band Rings

Materials

Diamond, Platinum

Mid-Century, 1.60 Carats Square Step-Cut Diamond Platinum Channel Band Ring
Located in Philadelphia, PA
Featuring square step-cut diamonds channel set fully around. Weighing approximately 1.60 carats
Category

20th Century Band Rings

Materials

Diamond, Platinum

Mid-Century 1.48 Carats Square Cut Diamond Platinum Vintage Eternity Band Ring
Located in Philadelphia, PA
Featuring square step cut diamonds channel set fully around Weighing approximately 1.48 carats
Category

Vintage 1950s Wedding Rings

Materials

Diamond, Platinum

Mid-Century 1.48 Carats Square Step Cut Diamond Platinum Eternity Band Ring
Located in Philadelphia, PA
Featuring square step cut diamonds channel set fully around. Weighing approximately 1.48 carats
Category

Vintage 1950s Band Rings

Materials

Diamond, White Diamond, Platinum

4 18k Gold Square Step Diamond Ruby Sapphire Emerald Puzzle Stack Band Rings
Located in Montclair, NJ
Diamonds - Square Step Cut - Prong Set - H/I Color - VS1/VS2 Clarity - 0.70ctw (approx.) Total Carat Weight
Category

Vintage 1980s Band Rings

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold, Yellow Gold

3.75 Carat Square-Cut Emerald Diamond Gold Cluster Ring
Located in Los Angeles, CA
3.75 Carats Square-cut Emerald Diamond Cluster Ring Square emerald-cut 3.75 carats emerald and
Category

Vintage 1980s Contemporary Cluster Rings

Materials

Diamond, Emerald, 18k Gold

2.11 Carat Square Asscher Cut Diamond Platinum Engagement Ring
Located in Greenwich, CT
You will be squared away when wearing this elegant 2.11 carat Asscher cut diamond engagement ring
Category

Early 2000s American Contemporary Engagement Rings

Materials

White Diamond, Platinum

Art Deco GIA 1.06 Carats Square Emerald Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Art Deco GIA 1.06 Carats Square Emerald Cut Diamond Platinum Ring. Featuring one GIA square
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Platinum

Kabana Opal and Diamond Ring Yellow Gold, 14 Karat Square Cabochon .18 Carat
By Kabana
Located in Greensboro, NC
: Square Cabochon Natural Diamonds Clarity: SI1 Color: G - H Cut: Round Total Carats: 0.18ctw Face
Category

21st Century and Contemporary Unknown Fashion Rings

Materials

Diamond, Opal, 14k Gold, Yellow Gold

Early Retro 0.35 Carat Diamond Platinum Square Form Engagement Ring
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing approximately 0.23 carat, K color with SI1 clarity
Category

Vintage 1940s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Early Retro 0.35 Carat Diamond Platinum Square Form Engagement Ring
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing approximately 0.23 carat, K color with SI1 clarity
Category

Vintage 1940s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Sapphire Diamond Gold Square Ring
Located in Poitiers, FR
Ring in 18 carat white gold. In the form of a square, this voluminous sapphire and white gold
Category

21st Century and Contemporary French Modern Cocktail Rings

Materials

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

0.46 Carat Square Cut Ruby and Diamond 14K Yellow Gold Pretty Ring
Located in New York, NY
A trio of Genuine rubies in square cuts adorns this pretty ring, accentuated by white diamonds set
Category

20th Century Chinese Art Deco Three-Stone Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Retro GIA Certified 1.39 Carat Square Emerald Cut Diamond Engagement Ring
Located in Narberth, PA
A beautiful diamond engagement ring from the Retro (ca1943) era! This gorgeous platinum ring holds
Category

Vintage 1940s Retro Engagement Rings

Materials

Diamond, Platinum

GIA Certified 0.63 Carat Square Princess Diamond Solitaire Platinum Ring F VVS2
By Gems and Jewels UK
Located in Birmingham, GB
Fine natural square/princess cut diamond set in a beautiful 950 platinum solitaire ring 0.63 carat
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Platinum

GIA 1.3ct Round Side Stone Bezel Band Solitaire Diamond Ring
By EMD Diamonds
Located in New York, NY
This stunning round diamond ring features a breathtaking I SI1 center stone weighing 1.3
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Platinum

Art Deco 1.03 Carats Diamond Platinum Square Form Knife Edge Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.97 carat - H color with VS2 clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA 1930s Art Deco 2.34 Carats Diamond Platinum Square Stepped Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing 2.02 carats - I color with SI2 clarity. Bead set in
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

0.50 Carat White Gold Diamond Ring
Located in Dallas, TX
In 14 karat white gold, with 0.50 cts of square-shaped, brilliant-cut diamonds! Size 6 3/4.
Category

21st Century and Contemporary Bridal Rings

Materials

Diamond, 14k Gold, White Gold

Square Baguette Diamond Platinum Ring Band
Located in Los Angeles, CA
Square baguette diamonds and platinum ring band. * ABOUT THIS ITEM: #R-DJ48H. Scroll down for
Category

1990s Contemporary Band Rings

Materials

Diamond, Platinum

1.00 Carat Diamond Platinum Channel Band Ring
Located in Philadelphia, PA
Wide band ring is set to front by five rectangular step cut diamonds Weighing in total
Category

2010s Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

1.00 Carat Diamond Platinum Channel Band Ring
Located in Philadelphia, PA
Wide band ring is set to front by five rectangular step cut diamonds Weighing in total
Category

2010s Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 0.48 Carat Old European Cut Diamond Platinum Square Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.42 carat total - H color with VS2
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Old Mine Diamond Art Deco Platinum Square Cocktail Ring
Located in Stamford, CT
Old mine diamond pierced square top ring in solid Platinum, circa 1920's 1 old mine cut diamond
Category

Vintage 1920s Cocktail Rings

Materials

Diamond, Platinum

Mid-Century 1950 s 1.95 Carats Square Step Cut Diamond Platinum Channel Band
Located in Philadelphia, PA
Band ring features nine square step-cut diamonds graduating in size and channel set to front
Category

Vintage 1950s Band Rings

Materials

Diamond, White Diamond, Platinum

Oval Cabochon Sapphire Square Diamond Gold Engagement Ring
Located in Stamford, CT
Oval Cabochon Sapphire Square Diamond Gold Engagement Ring 1 6 x 4 oval fine deep blue Sapphire
Category

Early 2000s Engagement Rings

Materials

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

Modern White Gold Diamond Square Shape Ring
Located in Poitiers, FR
Ring in 18 carat white gold. This white gold ring in the form of a square is bezel set at the
Category

21st Century and Contemporary French Modern Cocktail Rings

Materials

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

Vintage 1.45 Carat Sapphire and 0.72 Carat Diamond White Gold Full Eternity Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 1.45 carat sapphire and 0.72 carat diamond, 18 karat white gold eternity ring
Category

Vintage 1980s Unknown Engagement Rings

Materials

Diamond, Sapphire, White Gold

Square Cut Diamond Platinum Eternity Band Ring
Located in Beverly Hills, CA
Stunning diamond & platinum band ring set with thirty square cut diamonds (total weight
Category

Vintage 1980s Unknown Wedding Rings

Materials

White Diamond, Platinum

Modern Sapphire Diamond White Gold Square Ring
Located in Poitiers, FR
is set with 4 round blue sapphires with a border of brilliant cut diamonds. The beginning of the ring
Category

21st Century and Contemporary French Modern Cocktail Rings

Materials

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

1.74 Carat Diamond and Platinum Solitaire Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
diamond solitaire ring has been crafted in platinum. The pierced decorated, square shaped contemporary
Category

Antique Early 1900s Unknown Engagement Rings

Materials

Diamond, Platinum

Art Deco Platinum Diamond Square Cluster Ring
Located in Los Angeles, CA
weighing 1.96 Carats in total. 33 diamonds set in the top portion of the ring and 4 diamonds (2 on each
Category

Early 20th Century Art Deco Cluster Rings

Materials

Diamond, Platinum

18 Karat Gold Square Cut 0.80 Carat Sapphire with Round Diamonds Fashion Ring
Located in Scottsdale, AZ
This beautiful 18k white gold ring features a grid of 16 square cut sapphires, with round diamonds
Category

21st Century and Contemporary American Modern Fashion Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Endearing 0.78 Carat Diamond Platinum Five Stone Band Ring
Located in Philadelphia, PA
Set to front by five square step cut diamonds - split and V prongs Weighing in total approximately
Category

2010s Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

Vintage 0.75ct Natural Square Red Garnet and Diamond 14K Gold Ring
Located in New York, NY
This super Wearable and versatile vintage Garnet and Diamond Gold Ring will make a beautiful
Category

1990s Three-Stone Rings

Materials

Diamond, Garnet, Gold, 14k Gold

Oscar Heyman Platinum and Square Diamond Band Ring
By Oscar Heyman
Located in Chicago, IL
Platinum and Square cut Diamond Band Ring by Oscar Heyman, Diamond weight = 1.75 Carat, Finger size
Category

Vintage 1950s American Band Rings

Materials

Diamond, Platinum

Substantial Vintage 3.80 Carat Diamond Platinum Eternity Band Ring
Located in Philadelphia, PA
Eternity band ring features shared prong settings fully around with rectangular step cut diamonds
Category

Vintage 1960s Contemporary Band Rings

Materials

Diamond, White Diamond, Platinum

1980s 1.65 Carat Emerald and Diamond 18k Yellow Gold Trilogy Ring
Located in Jesmond, Newcastle Upon Tyne
the true representation of this fine square cut emerald and diamond ring. Emerald Quality Cut Square
Category

20th Century French Cluster Rings

Materials

Diamond, Emerald, Yellow Gold

Antique Inspired 2.43 Carats Sapphire Diamond Platinum Cluster Ring
Located in Beverly Hills, CA
One Antique Inspired 2.43 Carats Sapphire Diamond Platinum Cluster Ring. Featuring one step cut
Category

2010s Unknown Cluster Rings

Materials

Diamond, Sapphire, Platinum

Contemporary 1.30 Total Carat Diamond Bypass Ring
Located in Narberth, PA
overall diamond weight of the ring is approximately 1.30ctw. The larger, Square Cut stones are set
Category

Vintage 1960s Contemporary Fashion Rings

Materials

Diamond, Platinum

Antique 1.50 Carat Sapphire Diamond 18 Karat Gold Ring
Located in Beverly Hills, CA
One Antique Sapphire Diamond 18 Karat Gold Ring. Featuring one square step cut sapphire of
Category

Vintage 1910s Unknown Edwardian More Rings

Materials

Diamond, Sapphire, Gold, 18k Gold

Art Deco 1.77 CTW Diamond Platinum Square Cluster Vintage Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 1.25 carats - G color with VS2 clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. Platinum Diamond Lucida Solitaire Ring 0.93 Carat E/VVS2
By Tiffany Co.
Located in Mayfair, London, London
Lucida cut diamond in a 4 claw setting with a weight of 0.93ct, E colour and VVS2 clarity. The ring is a
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Platinum

GIA 1.61 Carats Colombian Emerald Diamond Platinum Three Stone Ring
Located in Beverly Hills, CA
One GIA 1.61 Carats Colombian Emerald Diamond Platinum Three Stone Ring. Featuring one GIA
Category

2010s American Engagement Rings

Materials

Diamond, Emerald, Platinum

GIA 2.80 Carats Step Cut Colombian Emerald Diamond Platinum Ring
Located in Beverly Hills, CA
GIA 2.80 Carats Step Cut Colombian Emerald Diamond Platinum Ring. Featuring one GIA octagonal step
Category

2010s American Engagement Rings

Materials

Diamond, Emerald, Platinum

0.30 Carat Alexandrite and Diamond Engagement Ring Set in Platinum
Located in Tokyo, JP
A spectacular engagement ring consisting of a tension-set 0.30 Carat Alexandrite and 0.28 Carats of
Category

2010s Japanese Art Deco Engagement Rings

Materials

Alexandrite, Diamond, Platinum

Art Deco Revival 0.53 Carat Carré Diamond Emerald Platinum Ring
By Belrose Estate Jewelers
Located in Santa Barbara, CA
Baguette Diamonds; 0.68 carats total; G-H Color, VS1-VS2 Clarity Ring Size: 6.5, sizing available Rise
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

GIA Certified Tiffany Co. Platinum Diamond Lucida Cut Ring 1.10 Carat
By Tiffany Co.
Located in Mayfair, London, London
Lucida cut diamond in a 4 claw setting with a weight of 1.10ct, G colour and VVS1 clarity. The ring is a
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

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Diamond Ring Square 4 Carat For Sale on 1stDibs

On 1stDibs, you can find the most appropriate diamond ring square 4 carat for your needs in our varied inventory. Frequently made of Gold, Platinum and 18k Gold, this item was constructed with great care. You can easily find a 239 antique edition and 258 modern creations to choose from as well. Finding the perfect diamond ring square 4 carat may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. As it relates to this specific piece, our collection includes designs that are universally popular, but .5 Carat and 1 Carat carat weights, specifically, are sought with frequency. A diamond ring square 4 carat from Tiffany Co., TJD and H H Jewels — each of whom created a beautiful version of this treasured accessory — is worth considering. A square cut version of this piece has appeal, but there are also emerald cut and round cut versions for sale. Most of our diamond ring square 4 carat for sale are for women, but there are 145 pieces available to browse for men.

How Much is a Diamond Ring Square 4 Carat?

The price for a diamond ring square 4 carat starts at $275 and tops out at $675,000 with these rings, on average, selling for $4,295.

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.