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Tiffany Co. Diamond Love Pin by Donald Claflin
By Donald Claflin for Tiffany Co.
Located in MIAMI, FL
design of diamond engagement rings. A young Franklin Delano Roosevelt proposed to his future wife
Category

Vintage 1970s American Modern Brooches

Materials

Diamond, Platinum

Antique Diamond Ruby and Enamel Gold Masonic Pendant / Watch Fob
Located in Jesmond, Newcastle Upon Tyne
of gold and is in excellent condition. Ruby Quality Cut Round Faceted Content 0.20 carat Diamond
Category

Antique Early 1900s Unknown Pendant Necklaces

Materials

Diamond, Ruby, Gold, Yellow Gold, Enamel

GIA Certified 3.07 Carat Square Emerald Cut Diamond Ring
Located in London, GB
A single stone diamond ring, the square emerald-cut diamond weighing 3.07 carats, of E colour VS1
Category

Early 2000s British Modern Engagement Rings

Materials

Diamond, Platinum

GIA Certified 1.51 Carat Solitaire Diamond Ring
Located in London, GB
A single stone diamond ring, the round brilliant-cut diamond weighing 1.51 carats of D colour and
Category

2010s British Modern Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

Ruby Sapphire Diamond Gold Ring
Located in Sarasota, FL
18k Ring with 1 Ruby cabochon weighing 2.77 carats, 4 square Sapphires weighing 0.57 carats and 28
Category

Late 20th Century More Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold

Vintage Emerald and Diamond Ring
Located in London, GB
A vintage emerald and diamond ring, the octagonal-cut emerald weighing 2.51 carats, accompanied by
Category

Vintage 1950s Engagement Rings

Materials

Diamond, Emerald, Platinum

Cartier Berlingot White Gold Diamond Ring
By Cartier
Located in New York, NY
square top pavé set with round brilliant cut diamonds totaling approximately 3.25 carats. Size 50, US 5 1
Category

Early 2000s Cocktail Rings

Materials

Diamond, White Gold

Lauren K. Yellow Gold Rutilated Quartz and Diamond Ring
By Lauren K.
Located in New York, NY
yellow gold bead detailing and round brilliant cut diamonds totaling 0.35 carats. Stamped 18K. The ring
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Quartz, 18k Gold, Yellow Gold

Square Fancy Yellow Diamond 4 carat engagement ring
Located in Lakewood, NJ
A perfectly set natural fancy yellow diamond in a platinum and diamond ring. Center diamond
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 18k Gold, Platinum

Marisa Perry Micro Pave 4 Carat Royal Asscher Diamond Ring
Located in New York, NY
Royal Asscher diamond ring in a state of the art setting. The Robbin setting makes the perfect
Category

2010s American Engagement Rings

Materials

White Diamond, Platinum

Vintage Inspired Bright Blue Square Sapphire Diamond 9 Carat Gold Cluster Ring
Located in Hamilton, AU
cut diamonds 0.15 carats. Ring Size O (Australia and UK sizing) or 7 1/4 (US and Canada). The Eloise
Category

21st Century and Contemporary Australian Modern Cluster Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 9k Gold, Yellow Gold

VS 1.40 Carat Diamond 14 Carat Gold Half Eternity Square Stack Ring
Located in St Helens, GB
A beautiful solid 14 carat gold and diamond ring. ​Designed in 14 carat yellow gold shank with a
Category

21st Century and Contemporary British Art Deco Cluster Rings

Materials

Diamond, 14k Gold

Natural Red Square Ruby and Round Diamond 9 Carat Yellow Gold Vintage Ring
Located in Hamilton, AU
cut diamonds total 0.16 carats, are G colour and P2 clarity grades. Ring Size N (Australia and UK
Category

20th Century Unknown Modern Cluster Rings

Materials

Diamond, Ruby, Gold, 9k Gold, Yellow Gold

Art Deco 18 Carat Gold VS Diamond Square Cluster Ring
Located in St Helens, GB
A superb art deco era cluster ring. Solid 18 carat white gold example. Designed with an old cut
Category

20th Century British Art Deco Cluster Rings

Materials

Diamond, Gold

18 Carat White Gold and Diamond Square Cluster Engagement Ring
Located in St Helens, GB
A stylish 18 carat white gold and diamond ring. ​Designed with four round cut diamonds to the
Category

21st Century and Contemporary British Art Deco Cluster Rings

Materials

Diamond, 18k Gold

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

20th Century Engagement Rings

Materials

Diamond, Platinum

Square Radiant Diamond White Gold Solitaire Engagement Ring
Located in Columbia, MO
: White Gold Square Radiant Diamond Solitaire Engagement Ring .87 carat square radiant center diamond GIA
Category

21st Century and Contemporary Engagement Rings

Materials

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

Vintage Circa 1970s 0.67 Carat Old Cut Diamond Square Ring 18 Carat Yellow Gold
Located in Hamilton, AU
Forged in 18 carat gold, this darling cluster ring features a square milgrain setting with a duo of
Category

20th Century Unknown Modern Cluster Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Wedding ring in 18 carat yellow gold decorated with 4 diamonds of 0.08 carats
Located in Monte-Carlo, MC
Wedding ring in 18 carat yellow gold decorated with 4 brilliant round cut diamonds of 0.02 carats
Category

21st Century and Contemporary Bridal Rings

Materials

Diamond, 18k Gold, Yellow Gold

TIFFANY CO. Platinum 1.53 Carat Round Brilliant with Square-cut Band Ring
By Tiffany Co.
Located in Los Angeles, CA
Carat Weight: 1.53 Carat Center Stone w/ Square-cut diamonds side stones Measurement: 7.36
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

1.67 Carats Colombian Emerald Diamonds 18 Carats White Gold Ring Certified
By Les Pierres de Julie
Located in Paris, FR
White gold ring set with a beautiful square cut Colombian emerald and baguette diamonds. Ring size
Category

2010s French Contemporary Bridal Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Natural Square Cut Emerald and Round White Diamond Vintage Platinum Band Ring
Located in Hamilton, AU
diamonds and gorgeous square cut green emeralds. We have named this vintage splendour The Antonella Ring
Category

20th Century Unknown Modern Band Rings

Materials

Diamond, Emerald, White Diamond, Platinum

14K Yellow Gold Sapphire Diamond Cocktail Ring with 0.21ct Square Modified Bri
Located in Holtsville, NY
: * Carat Weight: 0.21 (Square Modified Brilliant) * Stone Count: 4 * Stone Color: Colorless * Type/Clarity
Category

2010s American Artist Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

9 Carat Yellow Gold Diamond and Dark Oval and Square Blue Sapphire Cluster Ring
Located in Hamilton, AU
diamonds have an estimated weight of 0.04 carats. Ring Size N (Australia and UK sizing) or 6 3/4 (US and
Category

20th Century Unknown Modern Cluster Rings

Materials

Diamond, Blue Sapphire, Gold, 9k Gold, Yellow Gold

GIA Certified 1.52 Carat Emerald and Diamond Ring
Located in Atlanta, GA
square step cut diamonds 1.92 carats • Size 6 1/4 gross weight 11.6 grams
Category

Late 20th Century More Rings

Materials

Diamond, White Diamond, Emerald, Platinum

1.10 Carat Diamond Antique Engagement Ring Platinum
Located in Tampa, FL
. apx. European cut diamond with SI1 clarity and H-I color. The accenting .15ct. apx. T.W. square
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

15 Carat Aquamarine and Diamond Cocktail Ring
Located in Malvern, Victoria
4 square claws of the geometrically pierced box mount joined to the divided under rails of the
Category

2010s Australian Art Deco Fashion Rings

Materials

Aquamarine, Diamond, 18k Gold, White Gold

Vintage 1950s Diamond Solitaire Ring, 1.31 Carat
Located in Yorkshire, West Yorkshire
What an exquisite solitaire ring this is; a round diamond set in a square mount. The diamond is
Category

Vintage 1950s Retro Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

Vintage Circa 1950s Art Deco 2.07 Carat Aquamarine Diamond Ring 18 Carat
Located in Hamilton, AU
Crafted in 18 carat rose gold, The Dolores Ring is an amazingly bold art deco jewel. Her ice blue
Category

Vintage 1950s Unknown Art Deco Engagement Rings

Materials

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

Circa 1930s Star Set Old Cut Diamond 18 Carat Rose Gold Square Top Signet Ring
Located in Hamilton, AU
Forged in 9 carat rose gold, this suave men's signet ring features a shimmering Old Cut diamond
Category

20th Century Unknown Modern Signet Rings

Materials

Diamond, Gold, 9k Gold, Rose Gold

Old European Cut Diamond and Square Red Ruby Sundial Ring in 14 Carat Rose Gold
Located in Hamilton, AU
red rubies. The centre of the ring is adorned with a romantic old cut diamond accompanied by
Category

20th Century Unknown Modern Cocktail Rings

Materials

Diamond, Ruby, 14k Gold, Rose Gold

Art Deco 1.15 Carat Diamond Platinum Engagement Ring
Located in Tampa, FL
This is a fabulous Art Deco diamond Antique engagement ring featuring a 1.15ct. apx. European cut
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Square Emerald or Asscher Cut 4.19ct H/VS1 Diamond Solitaire Platinum Pavé Ring
Located in Lakewood, NJ
A 4.19 carat square emerald cut also known as an Asscher Cut diamond graded by the GIA as H color
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

Art Deco 0.55 Carat Old Cut Diamond Engagement Ring
Located in Essex, GB
A sublime vintage engagement ring. The old European cut diamond in the centre is secured by four
Category

Early 20th Century Engagement Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 2.83 Carat Diamond and Natural Red Spinel Ring
Located in Atlanta, GA
featuring a near 3 carat old European-cut diamond within a square frame accented by 12 old square-cut
Category

Vintage 1920s Art Deco More Rings

Materials

Diamond, White Diamond, Spinel, Platinum

Platinum 0.70 Carat Brilliant Cut Diamond Solitaire Engagement Ring
Located in East Grinstead, GB
diamond solitaire ring. Rub over brilliant cut diamond solitaire, flanked by a square princess cut diamond
Category

2010s British Art Deco Solitaire Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 0.60 Carat Old Cut Diamond Platinum Engagement Ring
Located in Essex, GB
A stunner of an old mine cut diamond ring. This striking Art Deco piece features a fine and lively
Category

Mid-20th Century Engagement Rings

Materials

Diamond, White Diamond, Platinum

1.50 Carat Alexandrite and Diamond Platinum Ring
Located in METAIRIE, LA
This Platinum Alexandrite & Diamond Ring features a central Oval cut 1.50 carat Alexandrite at
Category

Vintage 1950s Engagement Rings

Materials

Alexandrite, Diamond, Platinum

Traditional 1.25 Carat Sapphire and Old Cut Diamond Cluster Ring
Located in Theydon Bois, Essex
diamonds in a square cluster leading to a fine, but understated, pierced gallery. A ring that is classic in
Category

Mid-20th Century Cocktail Rings

Materials

Blue Sapphire, Diamond, Platinum

2.82 Carat Emerald and 1.4 Carat Diamond Ring 14 Karat Yellow Gold Ring 4.2g
Located in Daytona Beach, FL
This classic style ring contains a 2.82 carat square emerald cut emerald with two triangular
Category

Vintage 1980s Unknown Contemporary Fashion Rings

Materials

Diamond, Emerald, 14k Gold

Vintage Inspired Bright Red Ruby Diamond Cluster Ring 9 Carat Yellow Gold
Located in Hamilton, AU
The 9 carat gold Harriet Ring imagines a time and a place where love and passion knew no bounds
Category

21st Century and Contemporary Australian Contemporary Cluster Rings

Materials

Diamond, Ruby, Gold, 9k Gold, Yellow Gold

18 Karat Gold Square Emerald Cut Emerald and Diamond Art Deco Style Cluster Ring
Located in East Grinstead, GB
18 Karat Gold Square Emerald Cut Emerald & Diamond Art Deco Style Cluster Ring. A striking square
Category

2010s British Art Deco Cluster Rings

Materials

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

2.15 Carat Total Weight Sapphire Diamond Antique Fashion Ring Platinum
Located in Tampa, FL
This is a fantastic Art Deco sapphire and diamond Antique Engagement or Fashion ring which features
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco .75 Carat Diamond Platinum Engagement Ring
Located in Tampa, FL
prongs giving it a finished and squared off look. The diamonds are scintillating and the ring sparkles in
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Asscher Cut Diamond Ring 3 Carats
Located in Wimberley, TX
the stone. And fire is what this ring is all about. The stepped square cut diamond is
Circa 1960s Natural Green Emerald and Diamond Cluster Ring 18 Carat White Gold
Located in Hamilton, AU
of 0.16 carats, are F colour and SI clarity grades. Ring Size Q (Australia and UK sizing) or 8 1/4
Category

20th Century Unknown Modern Cluster Rings

Materials

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

Art Deco .35 Carat Diamond Platinum Engagement Ring
Located in Tampa, FL
Easily one of the sweetest vintage diamond engagement or fashion rings that we have. The vintage
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Vintage Circa 1980s Deep Blue Sapphire Diamond Signet Ring 9 Carat Gold
Located in Hamilton, AU
carats with G colour and SI clarity grades. Ring Size T (Australia and UK sizing) or 9 3/4 (US and
Category

20th Century Unknown Modern Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 9k Gold, Yellow Gold

Art Deco .28 Carat Diamond Platinum Engagement Ring
Located in Tampa, FL
An original vintage engagement ring featuring a .28ct. apx. European cut center diamond with SI2
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Art Deco 1.17 Carat Old European Cut Diamond Gold Engagement Ring
Located in Theydon Bois, Essex
square collet leading to an “H” gallery. Four (two either side) rubover set baguette cut diamonds step
Category

Mid-20th Century Art Deco Engagement Rings

Materials

Diamond, 18k Gold

18 Carat White Gold Aquamarine and Diamond Ring
Located in Splitter s Creek, NSW
level Diamonds. The Aqua Stone is 1.02 Carats, Square Cushion Cut, 4 Claw set, Clarity Eye-clean & Tone
Category

2010s Unknown Modern Solitaire Rings

Materials

Aquamarine, Diamond, White Gold

2.85 Carat Diamond Platinum Art Deco Engagement Ring
Located in Los Angeles, CA
beautiful 2.85ct EGL certified Square Old Mine Cushion Cut diamond graded H color and SI1 clarity. This
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

Art Deco .70 Carat Diamond Platinum Engagement Ring
Located in Tampa, FL
This antique engagement ring is crafted in platinum and features a .70ct. European cut diamond with
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Art Deco 1.75 Carat Diamond Platinum Engagement Ring
Located in Tampa, FL
A magnificent 1.75ct. apx. European cut diamond Antique Engagement Ring which is crafted in
Category

Vintage 1920s American Art Deco Engagement Rings

Materials

Diamond, Platinum

5.70 Carat Tourmaline Yellow Diamond 18 Karat White Gold Engagement Ring
By DGI
Located in Los Angeles, CA
Tourmaline that weighs 4.77 Carats. It is surrounded by 20 Round Cut Diamonds that weigh 0.50 Carats (Clarity
Category

2010s American Modern Engagement Rings

Materials

Diamond, Tourmaline, Yellow Diamond, 18k Gold, White Gold, Yellow Gold

Art Deco 1.00 Carat Diamond Platinum Engagement Ring
Located in Tampa, FL
A dazzling Art Deco platinum diamond antique engagement ring featuring 1.00ct. apx. European cut
Category

Vintage 1920s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

.52 Carat Princess Diamond White Gold Solitaire Engagement Ring
Located in Columbia, MO
This beautiful diamond engagement ring features a princess or square brilliant cut diamond center
Category

21st Century and Contemporary Engagement Rings

Materials

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