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Peridot Citrine Diamond Ring Estate 14 Karat Yellow Gold Square Mixed Gemstones
Located in Torrance, CA
Stylish mixed gemstone ring set with peridot, citrine & diamonds in 14 karat yellow gold. Citrine
Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Citrine, Diamond, Peridot, 14k Gold, Yellow Gold

Mid Century GIA 1.55 Carats Old Mine Cut Diamond Platinum Ring
Located in Beverly Hills, CA
One Mid Century GIA 1.55 Carats Old Mine Cut Diamond Platinum Ring. Featuring one GIA old mine cut
Category

Vintage 1960s American Engagement Rings

Materials

Diamond, Platinum

GIA Certified 5.17 Carat Natural Fancy Yellow Diamond Ring
Located in Webster, NY
flawless clarity. To add a touch of elegance to this ring the featured Diamond is accented by 4 Baguette
Category

2010s Engagement Rings

Materials

Diamond, Yellow Diamond, 14k Gold

1.15 Carat European Cut Diamond Gold Engagement Ring
Located in Miami, FL
European-cut diamond graded F-G color and VS clarity, mounted within 4 paw-prongs to create a square-shape
Category

Vintage 1950s Unknown Retro Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Men s Diamond Ring, 14 Karat Yellow Gold Round Cut .58 Carat
Located in Greensboro, NC
14k yellow and white gold, this signet-style ring showcases a resplendent natural white diamond set in
Category

20th Century Unknown Solitaire Rings

Materials

Diamond, 14k Gold, Yellow Gold

Late Art Deco 2.00 Carats Diamond Platinum Dinner Ring
Located in Philadelphia, PA
transitional cut diamond weighing approximately 0.90 carat - J color with VS clarity Set by tri-bead prongs in
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Platinum

0.17ctw Diamond Masonic Ring 10k-14k Gold Blue Lodge Square Compass Signet
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 0.17ct Cut - Round Brilliant Color - G - H
Category

21st Century and Contemporary Signet Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

Art Deco Onyx 1.05 Carat Diamond Gold Ring
Located in Napoli, NA
A magnificent Art Deco 18k white Gold ring set featuring a 1.05 carat Old Mine-cut Diamond with a
Category

Vintage 1940s Art Deco Engagement Rings

Materials

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

Art Deco Onyx 1.05 Carat Diamond Gold Ring
Located in Napoli, NA
A magnificent Art Deco 18k white Gold ring set featuring a 1.05 carat Old Mine-cut Diamond with a
Category

Vintage 1940s Art Deco Engagement Rings

Materials

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

Art Deco 0.60 Carat Diamond Platinum Eternity Band Ring
Located in Philadelphia, PA
Band ring features transitional cut diamonds fully around. Individually set in square forms
Category

Vintage 1930s Art Deco Band Rings

Materials

Diamond, White Diamond, Platinum

1927 Art Deco 0.83 Carat Diamond Platinum Engagement Ring
Located in Philadelphia, PA
Band ring features a transitional cut diamond weighing 0.56 carat - G color with SI1 clarity Set
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 0.53 Carat Diamond Platinum Buckle Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.35 carat - I color with SI clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 1.00 Carat Diamond Platinum Antique Dinner Ring
Located in Philadelphia, PA
Dinner ring is designed as a tiered square form with three rows of diamonds. Featuring old European
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Platinum

Royal Blue Enamel Square Ring Diamond Vintage Sz 5.75 18k Yellow Gold Jewelry
Located in Torrance, CA
Finely detailed vintage blue enamel & diamond dome ring (circa 1960s to 1970s) crafted in 18k
Category

Mid-20th Century Italian Modern Cocktail Rings

Materials

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

Art Deco 2.05 Carats Diamond Platinum Engraved Engagement Ring
Located in Philadelphia, PA
Featuring an old European cut diamond weighing approximately 1.55 carats - J color with VS clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 1.62 Carats Diamond Platinum Stepped Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 1.12 carats - L color with VS clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Diamond Ruby Shield Ring Vintage 14 Karat Yellow Gold Square Estate Fine Jewelry
Located in Torrance, CA
total an estimated 0.04 carats. Size & Measurements: The ring is a size 5 3/4 (sizable). The mount
Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Diamond, White Diamond, Ruby, 14k Gold, Yellow Gold

Art Deco 0.90 Carat Diamond Platinum Foliate Engagement Ring
Located in Philadelphia, PA
Featuring an old European cut diamond weighing approximately 0.80 carat - J color with VS clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 0.40 Carat Diamond Platinum Buckle Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.40 carat; J color with VS clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 0.46 Carat Diamond Platinum Trellis Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.35 carat - H/I color with VS clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 1.00 Carat Diamond Platinum Wheat Engagement Ring
Located in Philadelphia, PA
Featuring an old European cut diamond weighing approximately 1.00 carat - K color with SI1 clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Vintage 0.75 Carat Sapphire Diamond Platinum Channel Band Ring
Located in Philadelphia, PA
Band ring is channel set to front with diamonds and sapphires - alternating Princess cut diamonds
Category

Late 20th Century Contemporary Band Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

AIG Certified 3.69 Carat Oval Peridot and 1.98 Carat Diamond Cocktail Ring
Located in Crema, Cremona
square mixed cuts diamonds, weight estimated at 0.78 carats, F/H color and VVS clarity.
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, Peridot, 18k Gold, White Gold

Art Deco 2.50ct Diamond Ruby Ring Cluster Vintage 14k Yellow Gold Square 6.75
Located in Torrance, CA
Stylish vintage Art Deco era diamond & ruby ring crafted in 14 karat yellow gold (circa 1920s
Category

Early 20th Century American Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Ruby, Gold, 14k Gold, Yellow Gold

Art Deco 0.67 Carats Diamond Platinum Filigree Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.59 carat - K color with VS2 clarity
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Vintage Set of 2 Stacking Rings Diamond 14 Karat Yellow Gold Bridge Square
Located in Torrance, CA
carats (estimated at H-I color and VS2-SI1 clarity). The two square 'bridge' rings are ideal worn alone
Category

Late 20th Century Unknown Modern Band Rings

Materials

Diamond, 14k Gold, Yellow Gold

Art Deco Sapphire 1.58 Carats Diamond Platinum Dinner Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 0.50 carat - K color with SI1 clarity
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco Sapphire and Diamond 18 Carat Gold Three-Stone Ring
Located in Chipping Campden, GB
diamonds measure 20pts each and are set in platinum. Ring Size: O or 7 1/4 Widest Point: 5.5mm Weight
Category

Vintage 1920s British Art Deco Three-Stone Rings

Materials

Diamond, Sapphire, Gold

1.73 Carat GIA Cert Pear Shape Diamond Platinum Ring
Located in Beverly Hills, CA
clarity. Surrounded by 4 marquis cut diamonds weighing approximately 0.30 carats and 2 round diamonds
Category

Vintage 1930s Unknown Art Deco More Rings

Materials

Diamond, Platinum

1940 Retro 1.35 Carat Asscher Diamond Platinum Engagement Ring
Located in Philadelphia, PA
Centering in a low profile square form head, with an asscher cut diamond weighing approximately
Category

Vintage 1940s Retro Engagement Rings

Materials

White Diamond, Platinum

EGL Certified 2.70 Carat Diamond Gold Solitaire Engagement Ring
Located in Miami, FL
vintage engagement ring of unmatched feminine grace features an ornately chiseled, square-shaped diamond
Category

Vintage 1940s Unknown Art Deco Engagement Rings

Materials

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

12.50 Carat Round Brilliant Diamond Cocktail Ring by Nardi
Located in New York, NY
This estate cocktail ring signed by Nardi features a 12.50 carat round brilliant O-P color VVS
Category

21st Century and Contemporary Italian Cocktail Rings

Materials

Diamond, 18k Gold

1.73 Carat GIA Cert Pear Shape Diamond Platinum Ring
Located in Beverly Hills, CA
clarity. Surrounded by 4 marquis cut diamonds weighing approximately 0.30 carats and 2 round diamonds
Category

Vintage 1930s American Art Deco Engagement Rings

Materials

Diamond, Platinum

14KT White Gold Diamond Cocktail Ring (1 1/4 cttw, H-I Color, SI2-I1 Clarity)
Located in New York, NY
This diamond cocktail ring is designed with a vintage style and features a central square cluster
Category

21st Century and Contemporary Indian Modern Fashion Rings

Materials

Diamond, White Diamond, White Gold, 14k Gold

Modern Emerald and Diamond 18 Carat Gold Five-Stone Ring
Located in Chipping Campden, GB
central emerald measures 15pts and the diamond total is 40pts. Ring Size: N or 6 3/4 Widest Point: 4mm
Category

1990s British Modern Three-Stone Rings

Materials

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

Antique Art Deco 0.91 Carat Old Mine Cut Diamond Platinum Solitaire Ring
Located in Montgomery, AL
. The center diamond is an Old Mine cut measuring approximately 0.91 carats. Old Mine cut diamonds were
Category

Early 20th Century Art Deco Solitaire Rings

Materials

Diamond, White Diamond, Platinum

Diamond Halo Engagement Ring, 14 Karat White Gold Round Cut .85 Carat
Located in Greensboro, NC
enchanting piece showcases a sparkling diamond solitaire cradled in the center of a luminous, square-shaped
Category

20th Century Unknown Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Retro 2.08 Carat Diamond Platinum Trillion Engagement Ring GIA
Located in Philadelphia, PA
Centering an old European cut diamond, set in a square form head, weighing 1.68 carats; K color
Category

Mid-20th Century Retro Engagement Rings

Materials

Diamond, Platinum

Art Deco 2.35 Carats Old European Cut Diamond Platinum Milgrain Engagement Ring
Located in Philadelphia, PA
Centering an old European cut diamond weighing approximately 1.20 carats total - F color with VS1
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Aquamarine approximately 5ct and Diamond Ring
Located in Firenze, IT
, ring shoulders with 2 old cut diamonds total approx. 0.14 ct Size : 6 1/4 Weight: approx. 2.7 g
Category

Vintage 1970s Italian Retro Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, White Gold

Art Deco 0.75 Carat Diamond Platinum Geometric Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.60 carat; I color with VS clarity
Category

Vintage 1940s Art Deco Engagement Rings

Materials

Diamond, Platinum

Antique Art Deco 1930s 5.00 Carat Emerald Ring with Diamonds
Located in New York, NY
8 Baguette cut Diamonds weighing a total of approximately 1.20 carats.  Circa 1930s Size 5 1/4
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Delightful Art Deco 0.34 Carat Diamond Platinum Dinner Ring
Located in Philadelphia, PA
Dinner style ring centering an old European cut diamond weighing approximately 0.20 carat; eye
Category

Vintage 1930s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Art Deco GIA 3.14 Carat Antique Old European Diamond Plat Wedding Ring
Located in New York, NY
-9.39x5.15mm. A wonderful Square Top Prong setting makes the Diamond look much Larger than its size. The
Category

Vintage 1910s Art Deco Engagement Rings

Materials

Diamond, Platinum

GIA Certified Fancy Yellow 3.05 Carat Diamond Platinum Ring
Located in New York, NY
cut cornered square modified brilliant diamond, weighing 3.05 carats, flanked on each side by a
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

20 Karat Gold Hand Carved Gallery Art Deco Diamond Solitaire Ring Squared Head
Located in Addison, TX
WOW! This Art Deco solitaire is a stunner! Featuring a lively 3/4 carat Old Euro at the heart of
Category

Early 20th Century Unknown Art Deco Engagement Rings

Materials

Diamond

Art Deco 0.75 Carat Diamond Platinum Engagement Ring, Circa 1930
Located in Philadelphia, PA
Bombè ring centers a transitional cut diamond weighing approximately 0.40 carat; H color with VS
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco Onyx Coral 0.85 Carat Diamond Gold Ring
Located in Napoli, NA
. Ring contains one Old European cut Diamond weighing 0,85 carat Color: I/J Clarity: VS2 Gross Weight
Category

Vintage 1940s Italian Art Deco Band Rings

Materials

Coral, Diamond, Onyx, 18k Gold

1950 s Mid-Century 1.60 Carats Diamond Platinum Engagement Ring
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing approximately 1.30 carats - L color with VS
Category

Vintage 1950s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Jabel Late Art Deco 0.83 Carat Diamond Platinum Engagement Ring
By Jabel
Located in Philadelphia, PA
Designed as a cathedral style engagement ring and stylized square form head with unique fishtail
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco Sapphire and Diamond 18 Carat Gold Ring
Located in Chipping Campden, GB
square cut and surrounded by small but sparkling diamonds and diamond set shoulders. Ring Size: P 1/2 or
Category

Vintage 1920s British Art Deco More Rings

Materials

Diamond, Sapphire, Platinum, 18k Gold

Art Deco 0.37 Carat Diamond Platinum Pyramidal Antique Engagement Ring
Located in Philadelphia, PA
Ring features a stylized pyramidal square form flanked by pointed shoulders. Centering a
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Bristol Retro 1.18 Carats Diamond Platinum Fishtail Engagement Ring GIA
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing 1.00 carat - I color with VS1 clarity Set by
Category

Vintage 1940s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Gemayel 3.00 Carat Diamonds Two-Color Gold Abacus Ring
Located in Carmel-by-the-Sea, CA
white gold squares, each set with a brilliant round white diamond and effortlessly sliding to and fro on
Category

21st Century and Contemporary More Rings

Materials

Diamond, Rose Gold, White Gold

Art Deco 0.75 Carat Diamond Platinum Stepped Antique Engagement Ring
Located in Philadelphia, PA
Engagement ring is designed as a square form head with stepped shoulders. Centering an old mine cut
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

Mid-Century 0.90 Carat Diamond Platinum Fishtail Cluster Engagement Ring
Located in Philadelphia, PA
Centering a transitional cut diamond weighing approximately 0.65 carat; J color with VS clarity
Category

Vintage 1950s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco Sapphire and Diamond and 18 Carat White Gold Ring
Located in Chipping Campden, GB
side are bright baguette diamond step shoulders. The diamond total is 30pts. Ring Size: I 1/2 or 4 1
Category

Vintage 1920s British Art Deco Three-Stone Rings

Materials

Diamond, Sapphire, White Gold

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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.