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Mappin Webb Diamond and Multi-Gem Bracelet
By Mappin Webb
Located in Mayfair, London, London
square modified brilliant diamonds, 12 sapphires and rubies square cut alternating in size. The sapphires
Category

21st Century and Contemporary Link Bracelets

Materials

Diamond, Ruby, Sapphire, Multi-gemstone, 18k Gold, Yellow Gold

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

Dazzling 1Pc Natural Diamond with 1.02 Ct Cushion E VS1 IGI Certificate
Located in רמת גן, IL
1 sparkling natural square cushion modified brilliant diamond in a 1.02 carat E VS1 with excellent
Category

2010s Israeli Loose Gemstones

Materials

Diamond

3.10 Carat Radiant Diamond 18 Karat White Gold Engagement Ring
Located in Scottsdale, AZ
square modified “radiant” 3.10 carat diamond Color: H Clarity: VS1 Diamonds: 18 round brilliant cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold, White Gold

GIA Certified 1.01 carat Diamond Gold Engagement Ring
Located in Miami, FL
(rectangular modified brilliant cut diamond) approx: 1.01cts, graded E color, SI2 clarity ( very smal feather
Category

1990s Unknown Modern Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Van Cleef Arpels GIA Cert Fancy Intense Yellow Diamond Platinum Ring VCA
By Van Cleef Arpels
Located in Beverly Hills, CA
-carat natural fancy intense yellow cut-cornered square modified brilliant cut diamond set in platinum
Category

Early 2000s American Cocktail Rings

Materials

White Diamond, Yellow Diamond, Platinum

2.33 Carats GIA Cert Purplish-Pink Sapphires Diamond Gold Drop Earrings
Located in San Francisco, CA
18k white gold drop earrings features a 1.16 carat square modified brilliant cut purplish pink
Category

2010s More Earrings

Materials

Diamond, Pink Sapphire, 18k Gold, Gold

Natural No-Heat Ceylon Sapphire + Diamond Ring 3.70ct
Located in Narberth, PA
3.70ct, and is beautifully faceted into a Modified Brilliant Oval Cut. It naturally exhibits a gorgeous
Category

21st Century and Contemporary Unknown Contemporary Engagement Rings

Materials

Diamond, Sapphire, Platinum

Beautiful 1 pc Cushion Natural Diamond with 0.80 ct D IF - IGI Certificate
Located in רמת גן, IL
amazing and Sparkling natural cut square cushion modified brilliant diamond in a 0.8 carat D IF
Category

2010s Israeli Loose Gemstones

Materials

Diamond

GIA Certified 1.01 Carat Faint Blue VS2 Clarity Diamond
Located in บางรัก, TH
brilliant or cushion modified brilliant, each affecting the diamond's overall look. The overall appearance
Category

2010s Asian Loose Gemstones

Materials

Diamond

New Platinum GIA 2.58ctw Princess Diamond Sapphire Solitaire Engagement Ring
Located in Montclair, NJ
Diamonds - Round Brilliant Cut - Pave Set - G/H Color - VS1/VS2 Clarity - 0.40ctw (exact) (2) Natural
Category

2010s American Engagement Rings

Materials

Diamond, Sapphire, Platinum

1.48ctw Princess Diamond Engagement Ring 14k White Gold Size 5.5 Cathedral
Located in McLeansville, NC
Gemstone Information: - Natural Princess - Carats - 0.84ct Cut - Princess (modified Square
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Estate Platinum 12.53ctw GIA Tanzanite Emerald Diamond Cocktail Statement Ring
Located in Montclair, NJ
is then elegantly accented by vivid green emerald, baguette and round brilliant cut diamonds
Category

Vintage 1970s Cocktail Rings

Materials

Diamond, Emerald, Tanzanite, Platinum

Marvelous 18k Rose Gold Engagement Ring w/ 1.01 Natural Diamonds IGI Certificate
Located in רמת גן, IL
An elegant classic solitaire ring with a dazzling 1.01-carat square cushion modified brilliant cut
Category

2010s Israeli Solitaire Rings

Materials

Diamond, 18k Gold, Rose Gold

Elegant 18 kt. White Gold Ring with 0.70 ct Natural Diamond - IGI Certificate
Located in רמת גן, IL
, making it a perfect gift for any woman. Diamond: 0.7 carat Square cushion modified brilliant cut Color
Category

2010s Israeli Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

Dazzling 18k White Gold Stud Earrings W/ 1.48ct Natural Diamonds Igi Certificate
Located in רמת גן, IL
and a nice jewelry box. 2 diamonds main stone of 1.48 carat cut: square cushion modified brilliant
Category

2010s Israeli Stud Earrings

Materials

Diamond, 18k Gold, White Gold

Glamorous 18k Rose Gold Drop Earrings w/ 1.53 Carat Natural Diamonds IGI Cert
Located in רמת גן, IL
An elegant pair of drop earrings with a dazzling 0.32-carat square cushion-modified natural diamond
Category

2010s Israeli Drop Earrings

Materials

Diamond, 18k Gold, Rose Gold

18k White Gold Three Stone Ring with 1.11 Carat Natural Diamonds IGI Certificate
Located in רמת גן, IL
verification IGI 10J1933723 2 diamonds side stones of total: 0.36 ct. cut: square cushion brilliant color
Category

2010s Israeli Three-Stone Rings

Materials

Diamond, 18k Gold, White Gold

Diamond Wedding and Ring Set 950 Platinum Princess 3-Stone 1.39 Carat GIA
Located in Greensboro, NC
Modified Brilliant Carat: 0.72 Side Diamonds in engagement ring: Clarity: VS Color: F - G Cut: Princess
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Platinum

Dazzling 18k White Gold Solitaire Ring W/ 0.73 Carat Natural Diamonds IGI Cert
Located in רמת גן, IL
box. 1 diamond main stone of 0.73 carat cut: square cushion modified brilliant color: G-H clarity
Category

2010s Israeli Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

Glamorous 18k Yellow Gold Solitaire Ring W/ 0.79 Carat Natural Diamonds IGI Cert
Located in רמת גן, IL
jewelry box. 1 diamond main stone of 0.79 carat cut: square cushion modified brilliant color: G-H clarity
Category

2010s Israeli Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold

Tiffany and Co. Platinum Legacy Cushion Diamond Engagement Ring 1.77cts Ttl HVVS
By Tiffany Co.
Located in New York, NY
featuring a cushion modified brilliant center weighing 1.35 carats H color and VVS2 clarity adorned with
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

Platinum 18k Gold 2.58ct GIA Fancy Yellow Princess Diamond Trillion Emerald Ring
Located in Montclair, NJ
: Square Modified Brilliant (Princess Cut) Measurements: 6.56 x 6.25 x 4.31 mm Carat Weight: 1.78 carat
Category

2010s Engagement Rings

Materials

Diamond, Emerald, 18k Gold, Platinum

18k Yellow Gold AGL 3.56ctw Fancy Pink Orange Ceylon Sapphire Diamond Ring
Located in Montclair, NJ
Complete Info ** Natural Genuine Diamonds - 26 Round Brilliant Cut & 8 Square Step Cut - Pave & Channel Set
Category

21st Century and Contemporary Cocktail Rings

Materials

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

18 Karat Gold GIA 3.25 Carat Fancy Yellow and Baguette Diamond Ballerina Ring
Located in Montclair, NJ
) Natural Genuine Diamond - Cushion Modified Brilliant Cut - Fancy Light Yellow Color - VS1 Clarity - 1.45ct
Category

Vintage 1980s Art Deco Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Platinum 18k Gold 3.47ct GIA Fancy Yellow White Cushion Diamond 3 Stone Ring
Located in Montclair, NJ
Certification Details Below for Complete Info ** (2) Natural Genuine Diamonds - Square Cushion Cut - Prong Set
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Platinum 18k Gold 3.47ct GIA Fancy Yellow White Cushion Diamond 3 Stone Ring
Located in Montclair, NJ
Certification Details Below for Complete Info ** (2) Natural Genuine Diamonds - Square Cushion Cut - Prong Set
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Vintage 18k White Gold 3.01ct GIA Marquise Red Spinel, Sapphire, Diamond Ring
Located in Montclair, NJ
top and bottom by rows of 7 round brilliant cut diamonds. Those diamonds weigh a total of
Category

Late 20th Century Unknown Solitaire Rings

Materials

Diamond, Sapphire, Spinel, 18k Gold, White Gold

18k White Gold 25.10ctw AGL No Heat Cushion Sapphire W/ Diamond Halo Large Ring
Located in Montclair, NJ
neatly set at the center of a super lively and fiery round brilliant cut diamond halo. The very fine
Category

Early 2000s Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Mesmerizing 1.20ct Tanzanite Ring set in 18K White Gold
Located in רמת גן, IL
verification IGI 10J2198323 Side stones: 20 diamond side stones of total: 0.62 ct. cut: square modified color
Category

2010s Israeli Cocktail Rings

Materials

Diamond, Tanzanite, White Gold

Antique Square Cut Diamond Platinum Engagement Ring
Located in Stamford, CT
cornered rectangular modified brilliant cut- old cut pre 1900 diamond, approx. total weight 1.02cts, E, SI1
Category

Antique Late 19th Century Unknown Victorian Engagement Rings

Materials

Diamond, Platinum

New Platinum 18k Gold 1.64ct GIA Princess Diamond W/ Square Emerald 3 Stone Ring
Located in Montclair, NJ
diamond solitaire prong set at the center and is flanked on either side with a very fine quality square
Category

2010s North American Three-Stone Rings

Materials

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

Vintage 14k White Gold Large GIA Square Cushion Aquamarine Diamond Cocktail Ring
Located in Montclair, NJ
Information Below* (6) Natural Genuine Diamonds - Round Brilliant Cut - Prong Set - G-H Color - VS2 Clarity
Category

21st Century and Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

GIA Certified 1.50 Carat Princess Cut Diamond Platinum Halo Frame Pave Ring
Located in New York, NY
states that the 1.50 square modified brilliant-cut has H color and SI2 clarity.
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified 3.50 Carat Three Stone Princess Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Chicago, IL
carat H color, VS2 in clarity, Square Modified Brilliant diamond. The side diamonds are both 1.01 carat
Category

2010s Unknown Modern Three-Stone Rings

Materials

Diamond, Platinum

Tiffany Co 1.00 Carat Princess Diamond Solitaire Engagement Ring Platinum
By Tiffany Co.
Located in Scottsdale, AZ
features a single 1.00 carat modified brilliant square shaped natural diamond (G in color / VS2 in clarity
Category

21st Century and Contemporary Unknown Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified Graff Yellow Diamond 1.07ct Princess Cut Platinum Engagement Ring
By Graff
Located in London, GB
ring set in platinum, featuring an impressive four-claw set Square modified brilliant cut diamond
Category

Early 2000s British Modern Engagement Rings

Materials

Yellow Diamond, Platinum

1970s Gold Diamond and Tiger s Eye Modernist Ring
Located in Cincinnati, OH
polished Tiger's eye and flanked by two rows of brilliant cut round white diamonds weighing a total diamond
Category

Vintage 1970s American Modernist Fashion Rings

Materials

Diamond, Tiger s Eye, Gold, 14k Gold

Multi Row Channel Set 6.75 Carats Diamond and Ruby 14 Karat Gold Bangle Bracelet
Located in Scottsdale, AZ
carats total of natural rubies, square modified brilliant cut, in a purplish red color. They are channel
Category

Late 20th Century Unknown Contemporary Bangles

Materials

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

Art Deco Emerald Sapphire Diamond Platinum Cross Pendant
Located in Miami, FL
-faceted diamonds and modified square-cut emerald and square and triangular-cut blue sapphires is crafted
Category

Vintage 1920s Unknown Drop Necklaces

Materials

Blue Sapphire, Diamond, Emerald, Sapphire, White Diamond, Platinum

Tiffany Co. Platinum Diamond Solitaire Engagement Ring Set
By Tiffany Co.
Located in Scottsdale, AZ
Designer: Tiffany & Co Material: Platinum Diamond: 1 square modified brilliant cut = 0.52ct
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Tiffany Co 0.63 ct. G, VS1 Lucida Diamond Platinum Necklace
By Tiffany Co.
Located in Honolulu, HI
Square Brilliant Cut Corners". Total Diamond Weight: 0.63 CT. Diamond Quality: G Color. VS1 Clarity Metal
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

GIA Certified 6.50 Carat Fancy Yellow Diamond Three-Stone Ring
Located in Webster, NY
Square Modified Brilliant Color: Fancy Yellow Clarity: VS1 Accent Diamonds: Two Trapezoid Cut Diamonds
Category

21st Century and Contemporary Engagement Rings

Materials

Yellow Diamond, Platinum

Vintage 18 Karat White Gold Diamond Cross Greek Style
Located in Esch sur Alzette, Esch-sur-Alzette
of 0.30ct. The princess cut (technical name 'square modified brilliant') is a diamond cut shape. The
Category

Late 20th Century Italian Artist Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

2.73 total natural diamond carat - White gold 3 Stone Fancy Color Ring -IGI Cert
Located in רמת גן, IL
An elegant cluster ring with a dazzling 2.01-carat square cushion-modified natural diamond. It has
Category

2010s Israeli Three-Stone Rings

Materials

Diamond, White Gold

Ladies Antique Art Deco Platinum 3.46ct. Diamond Sapphire Cocktail Link Bracelet
Located in Houston, TX
tint Invisibly Set in 900 Platinum with: Fourteen (14) synthetic, square-shaped, modified brilliant
Category

Late 20th Century Unknown Art Deco Link Bracelets

Materials

Diamond, Sapphire, Platinum

Spectra Fine Jewelry GIA Certified Fancy Intense Yellow Diamond Necklace
By Spectra Fine Jewelry
Located in New York, NY
then, has continually gained popularity. Radiant diamonds are created with a modified brilliant cut
Category

21st Century and Contemporary Pendant Necklaces

Materials

Yellow Diamond, 18k Gold, White Gold

Tiffany and Co. Platinum Legacy Cushion Diamond Engagement Ring 1.77cts Ttl HVVS
By Tiffany Co.
Located in New York, NY
featuring a cushion modified brilliant center weighing 1.35 carats H color and VVS2 clarity adorned with
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

18k White Gold 2.06ctw Oval GIA No Heat Pink Sapphire Princess Diamond Ring
Located in Montclair, NJ
diamonds: a center row of 8 channel set square princess cut stones, and two rows of pavé set round
Category

Early 2000s Engagement Rings

Materials

Diamond, Pink Sapphire, 18k Gold, White Gold

Exquisite Multicolored Fancy Diamond Link Bracelet
Located in London, GB
, one modified square, two pear and a round brilliant-cut. One brownish yellowish orange in a modified
Category

2010s British Modern Tennis Bracelets

Materials

Diamond, White Diamond, Blue Diamond, Yellow Diamond, Pink Diamond, Brow...

GIA Certified Square Modified Brilliant Cut Diamond 1.14 Carat
Located in Surfside, FL
GIA report certified square modified brilliant cut diamond 1.14 carat (H Color, SI2 Clarity) ring
Category

20th Century Engagement Rings

Materials

Diamond, Yellow 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

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

3.17 Carat Square GIA Certified Princess Cut Diamond
Located in Gainesville, FL
You are viewing a Stunning 3.17 carat cut-cornered square modified brilliant cut diamond. This
Category

21st Century and Contemporary Unknown Modern Engagement Rings

Materials

Diamond, Other

Radiant-Cut Diamond Stud Earrings
Located in Greenwich, CT
diamond. GIA-certified: CUT-CORNERED SQUARE MODIFIED BRILLIANT Measurements: 5.83 x 5.82 x 4.25 mm
Category

21st Century and Contemporary American Stud Earrings

Materials

Diamond, White Diamond, Platinum

Unique Victorian Era Halo Engagement Ring with Cushion Square Diamond Center
Located in Los Angeles, CA
Brilliant Cut diamond graded F color and SI2 clarity. A cushion shaped halo of eight Old Mine Cut diamonds
Category

Antique 1880s Unknown Victorian Engagement Rings

Materials

Diamond, 14k Gold, Platinum

$6000 / GIA certified 1 Carat Diamond / VS1 / Wholesale price
Located in Rancho Mirage, CA
Top Quality GIA certified Natural Diamond GRADING RESULTS Shape: Square Modified Brilliant
Category

21st Century and Contemporary North American Loose Gemstones

Materials

Diamond

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Modified Brilliant Cut Square Diamond For Sale on 1stDibs

You are likely to find exactly the modified brilliant cut square diamond you’re looking for on 1stDibs, as there is a broad range for sale. Every item for sale was constructed with extraordinary care, often using gold, 18k gold and yellow gold. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect modified brilliant cut square diamond among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those produced as recently as the 21st Century. There have been many well-made iterations of the classic modified brilliant cut square diamond over the years, but those made by Tiffany Co., Graff and Peter Suchy are often thought to be among the most beautiful. Today, if you’re looking for a princess cut version of this piece and are unable to find the perfect match, our selection also includes square cut and radiant cut alternatives. Finding a modified brilliant cut square diamond for sale for women should be easy, but there are 54 pieces available to browse for unisex as well as men, too.

How Much is a Modified Brilliant Cut Square Diamond?

On average, a modified brilliant cut square diamond at 1stDibs sells for $13,192, while they’re typically $1 on the low end and $560,000 for the highest priced versions of this item.

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.