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1.30 Carat GIA Certified Square Brilliant Cut Diamond Platinum Engagement Ring
Located in New York, NY
This amazing platinum engagement ring centers a unique GIA certified modified square brilliant cut
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

3 Carat GIA Certificate G Color Cushion Diamond Platinum Bespoke Engagement Ring
By Hasbani Diamonds
Located in London, GB
of 0.25 carat round brilliant cut. This is a stunning diamond engagement ring set in platinum with
Category

2010s British Modern Engagement Rings

Materials

Diamond, Platinum

3 Carat GIA Certificate E Color Cushion Diamond Platinum Bespoke Engagement Ring
By Hasbani Diamonds
Located in London, GB
A bespoke ring with one of the best colors and clarity center diamond, 3.00 carat cushion cut
Category

2010s British Modern Engagement Rings

Materials

Diamond, Platinum

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

3.22 Carat GIA Diamond Square Halo Ring
Located in METAIRIE, LA
carat (E Color; I2 Clarity) Brilliant cut Diamond. Although ranking an I2 Clarity, the brilliance
Category

Early 2000s Engagement Rings

Materials

Diamond, 14k Gold, White Gold

.94 Carat Princess Cut Diamond Engagement Ring, 14 Karat White Gold Square Halo
Located in Greensboro, NC
This ring is a size 6 1/2 - 6 3/4, but it can be re-sized up 2 sizes for a $25 fee. Once a ring is
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, 14k Gold, White Gold

.50 Carat Diamond Gold Midcentury Engagement Ring
Located in Stamford, CT
Vintage style diamond engagement ring. 14k white gold engagement ring with a round brilliant cut
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Gold, 14k Gold, White Gold

14k Yellow Gold Natural Sapphire & Diamond Engagement Ring, Square Cut & Accent
Located in Toronto, ON
, 4mm, .4 carat. - Natural diamonds: round brilliant cut, 1.9mm, 18 pcs, SI clarity, .468 carat. - Band
Category

2010s Canadian Art Deco Engagement Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

1.02ctw VS2 Diamond Square Solitaire Engagement Ring 14k White Gold GIA Sz 7
Located in McLeansville, NC
Gemstone Information: - Natural Diamond - Carats - 1ct Cut - Square Modified Brilliant Color - H
Category

2010s Engagement Rings

Materials

Diamond, White Gold

Retro 0.63 Carat Diamond Platinum Engagement Ring, circa 1940
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing approximately 0.51 carat; H color with VS clarity
Category

Vintage 1940s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Mid-Century 0.75 CTW Diamond Platinum Buckle Square Form Vintage Engagement Ring
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing approximately 0.55 carat - G color with VS1
Category

Vintage 1950s Engagement Rings

Materials

Diamond, White Diamond, Platinum

Mid-Century 0.90 Carat Diamond Platinum Fishtail Cluster Engagement Ring
Located in Philadelphia, PA
; fishtail set Round brilliant cut diamonds weigh in total approximately 0.25 carat; H to J color with SI
Category

Vintage 1950s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Mid-Century 1.40 Carats Diamond Platinum Engagement Ring GIA, Circa 1950
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing 1.18 carat - F color with SI2 clarity Set by tri
Category

Vintage 1950s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

Vintage 14k White Gold 0.46ct Round Brilliant Diamond w/ Accents Engagement Ring
Located in Montclair, NJ
. It features a stunning round brilliant cut diamond neatly set at the center of the ring in a square
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Mid-Century 0.82 Carat Diamond Platinum Marquise Three Stone Engagement Ring GIA
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing 0.62 carat - H color with SI1 clarity. Set with
Category

Vintage 1950s Retro Engagement Rings

Materials

Diamond, White Diamond, Platinum

EGL Certified .61 Carat Round Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
Classic 1940's square top diamond engagement ring. EGL certified center stone, is a brilliant round
Category

Early 20th Century Engagement Rings

Materials

Diamond, Platinum

Peter Suchy 1.80 Carat Aquamarine Bezel Set Diamond Engagement Ring
By Peter Suchy
Located in Stamford, CT
square step cut blue aqua, VVS approx. 1.80cts 14 round brilliant cut diamonds, G-H VS SI .10cts Size 6.5
Category

21st Century and Contemporary Engagement Rings

Materials

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

Iridescent 1.58 Carat Sapphire and Square Diamond Halo Ring
Located in METAIRIE, LA
This Sapphire & Diamond Halo Ring features a central Round Cabochon cut 1.58 carat Iridescent Blue
Category

Vintage 1980s Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 4
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K White Gold, Size 4
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

French Engagement Ring Sapphire Diamonds White Gold
Located in Vannes, FR
French Engagement Ring Sapphire Diamonds White Gold Sublime 18 carat white gold engagement ring
Category

21st Century and Contemporary French Baroque Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

.85 Carat Round Brilliant Diamond Vintage Ring, 14 Karat White Gold Bypass
Located in Greensboro, NC
This ring is a size 6 3/4, but it can be re-sized up 2 sizes for a $30 fee or down 1 size for a $25
Category

20th Century Unknown Engagement Rings

Materials

Diamond, 14k Gold, White Gold

9 Carat Radiant Cut Diamond Engagement Ring Certified F VS
Located in New York, NY
QUEEN DIAMOND ENGAGEMENT 18K GOLD RING BY MIKE NEKTA CERTIFIED Center Diamond: Carat Weight: 8
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, White Gold

Certified Radiant Cut Diamond and Round Diamond Engagement Ring 18 Carat Gold
Located in Hamilton, AU
certified square Radiant diamond (also known as a cut cornered square modified brilliant) is 0.90 carat, and
Category

21st Century and Contemporary Australian Contemporary Engagement Rings

Materials

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

Tiffany & Co. Platinum True Cut Diamond Engagement Ring .59ct TW FVS1
By Tiffany & Co.
Located in New York, NY
featuring a cushion brilliant diamond center weighing 0.50 carats , F color , VS1 clarity set in a 4 prong
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

7 Carat Asscher Cut Diamond Engagement Ring GIA Certified G VVS1
Located in New York, NY
ADDISON DIAMOND ENGAGEMENT PLATINUM RING BY MIKE NEKTA GIA CERTIFIED Center Diamond: Carat Weight
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Art Deco 1.68 Carat Old European Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
Centering an old European cut diamond weighing 1.41 carats - H color with VS1 clarity Set in a
Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA 3.01 Carat Square Emerald / Asscher Cut Diamond and Sapphire Platinum Ring
By Susana Lang
Located in London, GB
piece. GIA certified 3.01 carat H color VS2 clarity very well cut Square Emerald or Asscher cut diamond
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Sapphire, Platinum

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

EGL Certified 1.04 Carat Princess Cut Diamond Halo 18 Karat Gold Engagement Ring
Located in Atlanta, GA
2006 Certified Diamond Halo Engagement Ring - 18 Karat White Gold, Diamonds Features: 1.04 carat
Category

21st Century and Contemporary Unknown Contemporary Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Ladies Scott Kay Palladium Diamond Engagement Ring
By Scott Kay
Located in Houston, TX
engagement ring with a soft-square shank. Engraved with "950Pd". The "Scott Kay" trademark (or hallmark) can
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Palladium

1.20 Carat Princess Cut Diamond Split-Shank Engagement Ring 14 Karat White Gold
By Made by Verma Group
Located in Atlanta, GA
Gold Features a Diamond encrusted Bypass Split Shank, 4-prong set Square Modified Brilliant center
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Art Deco Inspired Diamond Onyx Platinum Engagement Ring
Located in Beverly Hills, CA
One Art Deco Inspired Diamond Onyx Platinum Engagement Ring. Featuring one old European cut diamond
Category

2010s Art Deco Engagement Rings

Materials

Diamond, Onyx, Platinum

White Gold Aquamarine & Diamond Engagement Ring 14k Cushion Cut 1.07ctw
Located in Greensboro, NC
) Natural Diamonds Carats: .33ctw Cut: Round Brilliant Color: G - H Clarity: VS1 - VS2 Total Carats
Category

21st Century and Contemporary Engagement Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

Art Deco Revival 0.53 Carat Carré Diamond & Emerald Platinum Ring
By Bella Rosa Estate Jewelers
Located in Santa Barbara, CA
Clarity: VS1 Accent Gemstones: 8 Calibre & Step Cut Emeralds; 0.90 carats total 4 Round Brilliant & 4
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

14K White Gold Diamond Engagement Ring 0.77 ctw
Located in Houston, TX
-Prong Set in 14 Karat White Gold with: Two (2) round brilliant cut natural diamonds: Total Carat Weight
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring 14K White Gold, Size 8.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring 14K White Gold, Size 7.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring 14K White Gold, Size 6.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring 14K White Gold, Size 5.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring 14K White Gold, Size 4.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring 14K Rose Gold, Size 10.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring 14K White Gold, Size 10.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Vintage 1970s 3.05 Carat Emerald Diamond White Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage 3.05 carat Zambian emerald and 0.96 carat diamond, 18 karat
Category

Vintage 1970s Engagement Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Ladies 14k White Gold Semi Mount Diamond Engagement Ring
Located in Houston, TX
: Two (2) round brilliant cut natural diamonds: Total Carat Weight 0.56 ct. Color G - H Clarity SI3
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Art Deco Platinum Asscher Cut Diamond Engagement Ring 1.50ct
Located in Narberth, PA
This diamond engagement ring from the late Art Deco (ca1930s) era is a breathtaking beauty! Resting
Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Platinum

GIA 17.63 Ct Yellow SI2 Cushion Diamond Pave 18K Engagement Ring with Halo
By Sebastian Bernard
Located in Los Angeles, CA
stones: 0.90 total carat weight, Round Brilliant diamonds Metal: 18K White Gold 12.9 gr. Ring size: 6-1/4
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K White Gold, Size 8
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K White Gold, Size 6
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K White Gold, Size 7
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 11
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 7.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 8.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K White Gold, Size 11
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 9.5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K White Gold, Size 5
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 9
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Rose Gold, Size 8
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

1CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K White Gold, Size 10
Located in Los Angeles, CA
Cushion Cut 1 CT GH-I1 Natural Diamond Halo Engagement Ring for Women 14K Gold Specification
Category

21st Century and Contemporary American Artist Engagement Rings

Materials

Diamond, 14k Gold, White Gold

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Square Brilliant Diamond 4 Carat Engagement Ring For Sale on 1stDibs

Find the exact square brilliant diamond 4 carat engagement ring you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using gold, 18k gold and white gold. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a square brilliant diamond 4 carat engagement ring from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 19th Century while another version may have been produced as recently as the 21st Century. A square brilliant diamond 4 carat engagement ring from Tiffany & Co., Peter Suchy and Five Star Jewelry — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes square cut and princess cut alternatives. If you’re browsing our inventory for a square brilliant diamond 4 carat engagement ring, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Square Brilliant Diamond 4 Carat Engagement Ring?

The price for a square brilliant diamond 4 carat engagement ring starts at $1 and tops out at $365,000 with these rings, on average, selling for $7,605.

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.