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Retro Colombian Emerald and Diamond 18k Yellow Gold Wide Band Ring
Located in Santa Barbara, CA
and a half carats total. The well matched layout of old mine cut antique diamonds weighs 3/4 carats
Category

Vintage 1930s Retro Band Rings

Materials

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

18 Karat Yellow Gold Square Princess Ruby Eternity Band Weighing 4.60 Carat
By OGI Ltd
Located in New York, NY
/princess cut shape Burma ruby weighing 4.60 carat Ring size 6 The ring measures 4 millimeters wide The
Category

2010s American Contemporary Bridal Rings

Materials

Ruby, Gold, 18k Gold, Yellow Gold

Yellow Gold Ruby Diamond Ring
Located in Houston, TX
14K yellow gold ring with an oval ruby on top highlighted with square rubies and diamonds. Total
Category

Late 20th Century Unknown Cocktail Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

1950s Diamond and Ruby White Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive vintage 0.92 carat diamond and 0.45 carat natural ruby, 18 carat white gold
Category

Vintage 1950s Unknown Cluster Rings

Materials

Diamond, Rubelite, 18k Gold, White Gold

Piaget Sapphire Diamond Gold Ring
By Piaget
Located in Beverly Hills, CA
effect that features approximately 3 carats of beautiful blue square cut sapphires that surround a domed
Category

Vintage 1980s French More Rings

Materials

Diamond, Sapphire, 18k Gold

Art Deco Diamond Platinum Ring
Located in Beverly Hills, CA
round cut diamonds weighing approximate 2 carats and are E-F in color VS+ in clarity. Hand crafted in
Category

Vintage 1930s American Art Deco More Rings

Materials

Diamond, Platinum

Art Deco 18 Karat Yellow Gold 0.27 Carat Diamond 0.14ct Emerald Onyx Shield Ring
Located in Vilnius, Vilniaus apskr.
pcs. brilliant cut diamonds: TW 0.27ct, RW-W, VS-SI - 10 pcs. square step cut emeralds: TW 0.14ct
Category

Early 20th Century French Art Deco Cocktail Rings

Materials

Diamond, Emerald, Onyx, 18k Gold, Yellow Gold

Mens Diamond and Sapphire Rolex Styled 2 Tone Ring in 18k Yellow Gold
Located in Honolulu, HI
a 4 diamond center totaling 0.60 carats, G in color and VS in clarity, surrounded by 12 square blue
Category

21st Century and Contemporary Unknown Modern Cocktail Rings

Materials

Diamond, 18k Gold, Yellow Gold

Antique Art Deco Filigree Solitaire Style Diamond Ring
Located in Montgomery, AL
0.40 carats. The center diamond is an Old European cut, grades approximately G in color, and VS1 in
Category

Early 20th Century Art Deco Solitaire Rings

Materials

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

Antique 2.63 Carat Diamond and 18k Yellow Gold Trilogy Ring Circa 1925
Located in Jesmond, Newcastle Upon Tyne
square cut diamonds, integrating with the main setting and blend seamlessly with the plain ring shank
Category

Vintage 1920s Three-Stone Rings

Materials

Diamond, Yellow Gold, Platinum

Mid-Century French Sapphire Diamond Platinum Cluster Ring
Located in Beverly Hills, CA
One Mid Century French Sapphire Diamond Platinum Cluster Ring. Featuring one rectangular step cut
Category

Vintage 1960s French Cluster Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Aquamarine and Diamond Cluster Ring
Located in Carmel-by-the-Sea, CA
A classically styled cluster centered upon a 4 carat emerald cut aquamarine, the ring is made of 18
Category

2010s English Cluster Rings

Materials

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

Boucheron Sapphire Diamond Gold Ring
By Boucheron
Located in New York, NY
Boucheron sapphire diamond gold ring Cabochon sapphire of approximately 9.85 carats, square-cut
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, Yellow Gold

14kt Yellow Gold, Mother of Pearl, Black Onyx and Diamond Harlequin Ring
Located in McLeansville, NC
A 14 karat yellow gold, mother of pearl, black onyx and diamond harlequin ring. A tapered design
Category

Vintage 1980s Cocktail Rings

Materials

Diamond, Onyx, Pearl, Gold, 14k Gold, Yellow Gold

Art Deco Sapphire and Diamond Cluster Ring
Located in London, GB
Here we have an original Art Deco sapphire and diamond ring. Crafted from 18ct gold, this piece
Category

Vintage 1930s Art Deco Cluster Rings

Materials

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

0.41 Carats Blue Sapphires Diamonds set in 18K White Gold
Located in Los Angeles, CA
with 0.41 carats of bold blue Sapphires she won’t be saying no to a ring like this. Ring Overview SKU
Category

21st Century and Contemporary Malagasy Engagement Rings

Materials

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

0.41 Carats Blue Sapphires Diamonds set in 18K White Gold
Located in Los Angeles, CA
with 0.41 carats of bold blue Sapphires she won’t be saying no to a ring like this. Ring Overview SKU
Category

21st Century and Contemporary Malagasy Engagement Rings

Materials

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

1920s Diamond and 18 Karat White Gold Solitaire Ring
Located in Jesmond, Newcastle Upon Tyne
An impressive antique 1920's 0.68 carat diamond and 18 karat white gold solitaire style engagement
Category

20th Century Unknown Engagement Rings

Materials

Diamond, 18k Gold, White Gold

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

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Tourmaline, 14k Gold, White Gold

Art Deco 0.74 CTW Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.50 carat total - K color with VS2
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Sapphire Diamond Ring Vintage Gemstone Engagement 18k Yellow Gold Princess 6.75
Located in Torrance, CA
Stylish and finely detailed sapphire & diamond ring crafted in 18k yellow gold (circa 1970s to
Category

Late 20th Century American Modern Engagement Rings

Materials

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

1940s French Diamond and Yellow Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
round cut diamond, pavé set to a platinum square shaped setting. The flared, subtly elevated ring
Category

Vintage 1940s French Cocktail Rings

Materials

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

Fabulous Art Deco Diamond Sapphire Ring
Located in Chicago, IL
give the illusion of one Square Cut Diamond, total weight approximately .70 Carats. Further set with
Category

Vintage 1930s Unknown Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Retro 0.49 CTW Transitional Cut Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.41 carat total - I color with VS2
Category

Vintage 1940s Engagement Rings

Materials

Diamond, Platinum

Oscar Heyman Diamond Sapphire Platinum Ring
By Oscar Heyman
Located in Chicago, IL
carat and Square cut Sapphires totaling 1 Carat. The top of the ring measures 3/4 inch in length and 3/8
Category

1990s American Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Diamond Platinum Cocktail Ring
Located in New York, NY
brilliant diamond weighing 1.39 carats, further set with (2) two square cut diamonds and (36) thirty six old
Category

Vintage 1930s American Cocktail Rings

Materials

Diamond, Platinum

Vintage 1950s Emerald Diamond Yellow Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A fine vintage 0.60 carat emerald and 0.15 carat diamond, 18k yellow gold and 18k white gold set
Category

Vintage 1950s Unknown Retro Fashion Rings

Materials

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

Art Deco Diamond Ruby Gold Platinum Cocktail Ring
Located in Stamford, CT
with a bright sparkly center transitional cut diamond in an open work square top with natural bright
Category

Early 20th Century Cocktail Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold, Platinum, Gold

Art Deco 0.45 CTW Fancy Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.40 carat Fancy Light Brown in color
Category

Vintage 1930s Engagement Rings

Materials

Diamond, Platinum

Antique Art Deco Sapphire and Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning antique 1910s Art Deco 0.80 carat sapphire and 0.66 carat diamond, platinum dress ring
Category

Vintage 1910s Unknown Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Ruby Diamond Platinum Ring
Located in New York, NY
diamonds and a channel set row of 4 square cut rubies. The 10 diamonds weigh a total of approximately .20
Category

Vintage 1930s American Engagement Rings

Materials

Diamond, Ruby, Platinum

Art Deco Platinum Two Stone Diamond Engagement Ring 2.87ctw
Located in Narberth, PA
A lovely 2-stone diamond ring from the Art Deco (ca1920) era! This beautiful piece has two diamond
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Platinum

Marina B. Tourmaline Diamond Gold Ring
By Marina B
Located in New York, NY
baguette-cut diamonds with an approximate total weight of 2.44 carats, a center square-cut diamond with an
Category

Vintage 1980s French Fashion Rings

Materials

Diamond, Tourmaline, 18k Gold

14 Karat Yellow Gold Inlaid Dublet Opal Ring It Consists of 7 Square Opals Lined
Located in Los Angeles, CA
Amazing craftsmanship on this 14k yellow gold inlaid dublet opal ring. It consists of 7 square
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Diamond, Opal, 14k Gold, Yellow Gold

Large Diamond and Coral Cocktail Ring
Located in Chicago, IL
with two rows of fine white Square and Round Diamonds weighing a total of 2 Carats. Finger size = 5 1/4
Category

Vintage 1970s Unknown Cocktail Rings

Materials

Coral, Diamond, Platinum, 18k Gold

Tiffany Co. Platinum Novo Diamond Engagement Ring Cushion 1.15ct HVVS2
By Tiffany Co.
Located in New York, NY
square cushion brilliant diamond center weighing 1.15 carats , H color , VVS2 clarity set in a 4 prong
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

Emerald Diamond White Gold Band Ring
Located in Bay Harbor Islands, FL
Carats. Ring Size: 5 3/4 (cannot be sized) Metal Type: 18 Kt White Gold (stamped and/or tested)
Category

21st Century and Contemporary Unknown Band Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Tiffany Co. Platinum Diamond Princess Engagement Ring 1.66ct Center GVVS1
By Tiffany Co.
Located in New York, NY
open gallery featuring a square princess cut diamond center weighing 1.66 carats , G color , VVS1
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. Platinum Diamond Princess Engagement Ring 1.83ct Center GVVS1
By Tiffany Co.
Located in New York, NY
open gallery featuring a square princess cut diamond center weighing 1.66 carats , G color , VVS1
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

C.J. Auger Sapphire Diamond Ring
Located in Amsterdam, NL
A 14 carat gold swirl ring set with a line of brilliant cut diamonds and one with square cut
Category

Vintage 1930s American Band Rings

Materials

Diamond, Sapphire, 14k Gold, Platinum

Art Deco Diamond Platinum Engagement Ring
Located in Boca Raton, FL
This gorgeous original Art Deco platinum diamond ring features an approximate 1.00 carat Old
Category

Early 20th Century Art Deco Engagement Rings

Materials

White Diamond, Blue Sapphire, Platinum

Late Victorian Emerald and Diamond Five Stone Ring Set in 18k Yellow Gold
Located in London, England
a remaining diamond weight of 0.04 carats. The ring is currently a UK finger size K (USA size 5 1/4
Category

Antique 1890s Late Victorian Cocktail Rings

Materials

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

Retro Diamond Platinum Five-Stone Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.50 carat; H color with VS clarity
Category

Vintage 1940s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Tiffany Co. Platinum True Cut Diamond Engagement Ring .78ct IVS2
By Tiffany Co.
Located in New York, NY
featuring Tiffany's signature True cut diamond center weighing .78 carats, I color, VS2 clarity with
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

Estate 1950s Diamond and Platinum Engagement Ring
Located in San Francisco, CA
accented by 4 single-cut diamonds. Estimated total diamond weight for the ring is 0.73 carat. The ring
Category

Vintage 1950s Engagement Rings

Materials

Diamond, Platinum

Art Deco 0.65 Carat Old European Diamond and 18 Karat White Gold Ring
Located in Philadelphia, PA
Centering three old European cut diamonds, set low East to West, each in a square form head Total
Category

Early 20th Century Unknown Art Deco Three-Stone Rings

Materials

Blue Diamond, 18k Gold

Art Deco Diamond-Set Platinum Ring
Located in Litchfield, CT
Circa 1930s, Platinum, France. Set with a brilliant white .65 carat diamond (G color SI2 clarity
Category

Vintage 1930s French Art Deco Cocktail Rings

Materials

Diamond, Platinum

Diamond and Pearl White Gold Trilogy Ring Antique, circa 1930
Located in Jesmond, Newcastle Upon Tyne
An impressive antique 0.32 carat diamond and pearl, 14 karat white gold trilogy style dress ring
Category

Vintage 1930s Cocktail Rings

Materials

Diamond, Cultured Pearl, 14k Gold, White Gold

Art Deco Diamond Platinum Cluster Engagement Ring
Located in Chicago, IL
carats The top measures 12.5 x 12.5 mm (1/2 x 1/2 in.) Platinum marks Ring size 6 1/4
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond

Diamond Gold Pyramid Ring
Located in Los Angeles, CA
A unique diamond ring, circa 1970, bold and mystical... carry the force with you... designed as a
Category

Vintage 1970s Dome Rings

Tiffany Co. Mid-Century 2.44 CTW Diamond Platinum Marquise Ribbon Band Ring
By Tiffany Co.
Located in Philadelphia, PA
Alternating with bezel set square step-cut and baguette cut diamond stations With round brilliant cut diamonds
Category

Vintage 1950s Band Rings

Materials

Diamond, Platinum

Vintage Carré Cut Diamond Platinum Band
Located in Beverly Hills, CA
ring is a size 5 3/4 and may be resized. About this Item: Elevate your jewelry game when you wear his
Category

Early 2000s American Band Rings

Materials

Diamond, Platinum

Art Deco 1.21 CTW Diamond Platinum Stepped Buckle Vintage Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.97 carat total - K color with SI1
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Art Deco 1.00 CTW Old European Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.92 carat total - J color with VS2
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Van Cleef Arpels Sapphire Diamond Gold Ring
By Van Cleef Arpels
Located in Beverly Hills, CA
The Van Cleef & Arpels ring is in 18k yellow gold set with 9 square cut sapphires of excellent
Category

Late 20th Century Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

Estate Emerald Diamond and White Gold Ring
Located in San Francisco, CA
carat round brilliant-cut diamond, framed within a halo of 22 square-cut emeralds, with wide pierced
Category

20th Century Engagement Rings

Materials

Diamond, Emerald, 18k Gold

Early Art Deco Diamond Platinum Orange Blossom Vintage Wedding Band Ring
Located in Philadelphia, PA
Featuring single cut diamonds weighing approximately 0.18 carat total - eye clean and bright Bead
Category

Vintage 1910s Art Deco Wedding 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.