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1pc Sparkling 1ct Square Modified Brilliant Cut Natural Diamond
Located in רמת גן, IL
This stunning square modified brilliant cut diamond is a rare and valuable gem. It is perfectly cut
Category

2010s Israeli Loose Gemstones

Materials

Diamond

GIA Certified Square Modified Brilliant Cut Diamond 2.03 Carat
Located in Surfside, FL
ESTIMATED RETAIL: $45,750.00 G&S PRICE: $34,160.00 GIA certified square modified brilliant cut
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

0.50 Carat Square Modified Brilliant Cut Diamond Engagement Ring
Located in London, GB
Here we have a platinum engagement ring featuring a stunning square modified brilliant-cut diamond
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Classic 1ct. Square Modified Brilliant Solitaire Diamond Ring
Located in רמת גן, IL
Product Details: ~Metal: 18K Yellow Gold Main stone: 1ct square modified brilliant natural
Category

2010s Israeli Loose Gemstones

Materials

Diamond

0.33ct E/VS1 Square Modified Brilliant Cut Diamond Ring Set in Classic Platinum
Located in London, GB
This classic solitaire ring features a 0.33ct E/VS1 square modified brilliant cut diamond, set in a
Category

2010s British Engagement Rings

Materials

Diamond, Platinum

0.52 Carat Square Modified Brilliant Diamond Solitaire Engagement Ring
Located in London, GB
This is an 18ct white gold diamond solitaire ring. The central diamond is a square modified
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Gold, White Gold

Natural Square Modified Brilliant Diamond in a 0.50 Carat G IF, GIA Certificate
Located in רמת גן, IL
Natural square modified brilliant diamond in a 0.50 carat G IF with Beautiful cut and shine. This
Category

2010s Israeli Loose Gemstones

Materials

Diamond

1pc. Sparkling 1.5 Carat Square Modified Brilliant Natural Diamond
Located in רמת גן, IL
This is a 1.5 carat G VS1 very good polish and good symmetry square modified brilliant diamond. It
Category

2010s Israeli Loose Gemstones

Materials

Diamond

14K Yellow Gold 0.91ctw Diamond Band Ring, Size 8 Square Modified Brilliant
Located in Holtsville, NY
fine jewelry collection. Featuring 14 square modified brilliant diamonds with a total carat weight of
Category

2010s American Artist Band Rings

Materials

Diamond, Yellow Gold

14K White Gold Square Modified Diamond Ring
Located in Laguna Beach, CA
Ladies' engagement ring with square modified brilliant center diamond in 14k white gold setting
Category

Mid-20th Century Engagement Rings

Materials

Diamond, 14k Gold, White Gold

1.07 Carat Loose J / I1 Square Modified Brilliant Diamond GIA Certified
Located in Sherman Oaks, CA
Diamond General Info Diamond Cut: Princess Cut Measurements: 6.29 x 6.16 - 4.16 Diamond
Category

21st Century and Contemporary American Modern Loose Gemstones

Materials

Diamond

Platinum Solitaire Diamond Ring Set with 0.62ct H/VVS2 Square Modified Diamond
By Unbranded
Located in London, GB
An elegant Diamond ring for your engagement, this Platinum ring features a 0.62ct Square Brilliant
Category

2010s British Engagement Rings

Materials

Diamond, Platinum

GIA Certified Modified Brilliant Cut Diamond 5.17 Carat 18k White Gold Ring
Located in Surfside, FL
GIA certified cushion modified brilliant cut diamond 5.17 carat ( G color, SI2 clarity) ring
Category

20th Century Engagement Rings

Materials

White Gold

GIA Certified 0.60 Carat Solitaire Square Brilliant Diamond Ring in Platinum
Located in London, GB
This immaculate ring features a Square Modified Brilliant Diamond at its centre, held in a claw
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Platinum

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

GIA Certified 3.47 Carat Square Brilliant Diamond Platinum Engagement Ring 6
By H & H Jewels
Located in Miami, FL
brilliant cut bezel set diamond, color I and clarity SI1 set at center (GIA#14437972). Two additional moon
Category

2010s Engagement Rings

Materials

Diamond, Platinum

0.70 Carat Square Brilliant Princess Cut Gia Certified H Color I1 Clarity Diamo
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56562 Stone Shape: SQUARE MODIFIED BRILLIANT Diamond Weight: 0.70ct
Category

Antique 15th Century and Earlier Loose Gemstones

Materials

White Diamond

1.65ct Natural Earth Mined Square Cushion Master Brilliant Cut Blue Zircon from
Located in Toronto, Ontario
4.83 mm Shape: Square Cushion Cutting Style: Cutting Style Crown: Brilliant Cut Cutting Style Pavilion
Category

2010s Cambodian Loose Gemstones

Materials

Blue Zircon

2.04ct Natural Earth Mined Square Cushion Master Brilliant Cut Blue Zircon from
Located in Toronto, Ontario
4.46 mm Shape: Square Cushion Cutting Style: Cutting Style Crown: Brilliant Cut Cutting Style Pavilion
Category

2010s Cambodian Loose Gemstones

Materials

Blue Zircon

3.88ct Natural Earth Mined Pair Square Cushion Master Brilliant Cut Blue Zircon
Located in Toronto, Ontario
: Brilliant Cut Cutting Style Pavilion: Modified Brilliant Cut Transparency: Transparent Clarity: Very
Category

2010s Cambodian Loose Gemstones

Materials

Blue Zircon

0.74 Carat Square Brilliant Gia Certified K Color I2 Clarity Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56895 Stone Shape: SQUARE MODIFIED BRILLIANT Diamond Weight: 0.74ct
Category

Antique 15th Century and Earlier Loose Gemstones

Materials

White Diamond

GIA Certified 0.96 Carat Square Brilliant D Color VS2 Clarity Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NY56227 Stone Shape: SQUARE MODIFIED BRILLIANT Diamond Weight: 0.96ct
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond

18K Yellow Gold Band Ring with Carre-Cut Rubies and Brilliant-Cut Diamonds
Located in Bergamo, BG
are two elegant rows of brilliant-cut diamonds, adding a touch of sparkle and sophistication. With a
Category

21st Century and Contemporary Italian Fashion Rings

Materials

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

GIA Certified 0.51 Carat Solitaire Square Cut Diamond Ring in Platinum
Located in London, GB
Modified Brilliant Diamond of E colour and SI1 clarity. The Scintillating diamond in this masterpiece is
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Platinum

GIA Certified 2.56 Carat Square Cut Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
. 1 square modified brilliant cut diamond, G VVS2 approx. 1.38cts GIA Certificate # 2165847195 2
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified 0.13ct Fancy Deep Pink Cut Cornered Square Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC58600 Stone Shape: Cut-Cornered Square Diamond Weight: 0.16ctw Fancy
Category

21st Century and Contemporary Loose Gemstones

Materials

Pink Diamond

Bespoke GIA Square Pear 19.38 Carat Yellow White Platinum Diamond Drop Earrings
By Hasbani Diamonds
Located in London, GB
- Cornered Rectangular Modified Brilliant GIA Certified Diamonds Y to Z in color with VS1 to VVS2 clarity
Category

2010s British Modern Drop Earrings

Materials

Diamond, White Diamond, Yellow Diamond, Platinum

GIA 2.13cttw Square Brilliant Diamond 14K Gold Stud Earrings
Located in Miami, FL
Natural Cut-Cornered Square Modified Brilliant diamond prong set in 14K white gold stud earrings
Category

Vintage 1960s Stud Earrings

Materials

Diamond, 14k Gold

14K White Gold Square Cut Diamond Engagement Ring Size 5.75 GIA Certified #20109
Located in Washington Depot, CT
white gold engagement ring features one square modified brilliant cut diamond (.42 ct.) accented with 20
Category

20th Century Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

18k Yellow Gold Ring with Square-Cut Emerald and Diamond Accents
Located in Bergamo, BG
square-cut emerald at its center, flanked by rows of sparkling brilliant-cut diamonds on each side. The
Category

21st Century and Contemporary Italian Fashion Rings

Materials

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

18k Yellow Gold Ring with Square-Cut Sapphires and White Diamonds
Located in Bergamo, BG
accessory. Key Features: 18k yellow gold Square-cut sapphires: 0.39 carats total White diamonds: 0.44
Category

20th Century Italian Fashion Rings

Materials

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

18k Yellow Gold Ring with Square-Cut Sapphires and Baguette Diamonds
Located in Bergamo, BG
geometric design with alternating rows of square-cut sapphires and baguette-cut diamonds. The sapphires
Category

Late 20th Century Italian Fashion Rings

Materials

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

3.67 Carat Square Cut Tourmaline Ring with Diamonds in 14 Karat Yellow Gold
Located in Scottsdale, AZ
artistry and timeless design. At its center, a square modified brilliant cut green tourmaline commands
Category

21st Century and Contemporary Unknown Contemporary Cocktail Rings

Materials

Tourmaline, Diamond, Yellow Gold, 14k Gold, Gold

18k Yellow Gold Ring with Central Square-Cut Emeralds and Side Diamonds
Located in Bergamo, BG
of vibrant square-cut emeralds, totaling 0.45 carats, flanked by pavé-set brilliant-cut diamonds
Category

20th Century Italian Fashion Rings

Materials

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

GCS Certified 2.04 Carat Square Cut Blue Sapphire and Diamond Ring in 18K Gold
Located in London, GB
Made of a Spectacular Square Modified Blue Sapphire weighing 2.04 Carats and glittering Round
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Celebration Diamond Ring Princess Cut 0.97 Carat G SI2 18 Karat White Gold
By Celebration Diamond
Located in San Diego, CA
Weight: 0.97 Cts. Diamond Shape: Princess ( Square Modified Brilliant ) Diamond Color & Clarity: G
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Celebration Diamond Engagement Ring Princess Cut 1.00 CT H VVS2 14KT White Gold
By Celebration Diamond
Located in San Diego, CA
Modified Brilliant ( Princess ) 1.00 CTS Diamond Color & Clarity: H / VVS2 Diamond Inscription
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Square Cut Blue Sapphire and Diamond Multi-Row Band Ring in 14 Karat White Gold
Located in Scottsdale, AZ
Cut: Square modified brilliant cut Sapphire Color: Blue Sapphire Mineral Type: Natural corundum
Category

21st Century and Contemporary Unknown Contemporary Band Rings

Materials

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

18kt Yellow Gold Band Ring with Square-Cut Sapphire
Located in Bergamo, BG
, featuring a central square-cut sapphire weighing 0.35 carats. The sleek and minimal design highlights the
Category

21st Century and Contemporary Italian Fashion Rings

Materials

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

1.01 Carat Rectangular Brilliant Gia Certified Fancy Yellow I1 Clarity Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC55507 Stone Shape: CUT-CORENRED RECTANGULAR MODIFIED BRILLIANT Diamond
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond

Leo Diamond Engagement Ring Princess Cut 0.97 Carat 14 Karat Yellow Gold
By The Leo Diamond
Located in San Diego, CA
Total Carat Weight: 0.97 CTS Diamond Shape: Square Modified Brilliant Diamond Color & Clarity: I / SI1
Category

Early 2000s American Engagement Rings

Materials

Diamond, 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

18K White Gold Diamond Pavé Square Stud Earrings
Located in Bergamo, BG
natural white brilliant-cut diamonds. The sleek, structured design enhances the brilliance of the diamonds
Category

21st Century and Contemporary Italian Drop Earrings

Materials

Diamond, 18k Gold, Yellow Gold, White Gold

Bvlgari Fancy Cut Yellow Diamond Trombino Ring
By Bulgari
Located in New York, NY
central impressive gemstone to stand proud as the epicenter of the creation. Cut-Cornered Square Modified
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold

GIA Certified Square Emerald Cut Diamond 4.08 Carat Platinum Ring
Located in Surfside, FL
GIA certified 4.00 carat Natural Fancy Yellow Even, Cut Cornered Square Modified Brilliant Diamond
Category

20th Century Engagement Rings

Materials

Platinum

Certified 1.36 Carat Square Padparadscha Sapphire and Diamond Ring in Platinum
Located in London, GB
The centre stone of this elegant ring is a Square Modified GCS Certified Natural Padparadscha
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Padparadscha Sapphire , Platinum

Leo Diamond Three-Stone Princess Cut 1.04 Carat G-H SI1-SI2 Ring 14 Karat Gold
By The Leo Diamond
Located in San Diego, CA
: Square Modified Brilliant Princess Diamond Color & Clarity: center stone - 0.46CT G-H / SI1-SI2
Category

Early 2000s American Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold, Platinum

IGI Certified Vintage 17K and 14K White Gold Natural Square Emerald and Diamond
Located in Washington Depot, CT
modified brilliant diamonds estimated at .07 carats each - 1.4 carats in total VS2/SI1 - Near Colorless 6
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Emerald, White Gold

IGI Certified Multi Shape Diamond Tennis Bracelet 9.73 Carats G-H VS-SI 18K Gold
By Harbor Diamonds
Located in New York, NY
Heart, and 1 Square Modified Brilliant Bracelet took over one year to be made, such a beauty!
Category

2010s Contemporary Link Bracelets

Materials

Diamond, 18k Gold, White Gold

18kt Yellow Gold Band Ring with Square Sapphires and Diamonds
Located in Bergamo, BG
of square-cut sapphires bordered by brilliant-cut diamonds. A sophisticated design perfect for adding
Category

Late 20th Century Italian Fashion Rings

Materials

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

Platinum and 18k Gold Diamond Ring with App. 1.50 Cts in Brilliant Cut Diamonds
Located in Surfside, FL
square cut diamonds (0.24 to 0.26 carats each) with app. 1.50 carats total weight (F-G-H color
Category

20th Century Engagement Rings

Materials

Yellow Gold, 18k Gold, Platinum

13.60 Carats Mens Round and Square Diamond Watch Link Bracelet in 18 Karat Gold
Located in Scottsdale, AZ
Natural Diamonds: 13.60 ctw Diamond cut: Round and Square Modified Brilliant Diamond color: J-K-L Diamond
Category

21st Century and Contemporary Unknown Contemporary Link Bracelets

Materials

Diamond, Gold, 18k Gold, White Gold

Modern 18k White Gold Square Ring with Natural Diamond Pavé 5.28 carats
Located in Bergamo, BG
striking square design entirely adorned with a pavé of natural white diamonds totaling 5.28 carats. Crafted
Category

21st Century and Contemporary Italian Fashion Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

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

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

GiA Certified Fancy Cut and Fancy Color Diamond Bracelet in 18k Gold
Located in New York, NY
square modified brilliant : 0.85 carat Pear : 1.01 carat Cushion brilliant :0.96 carat Oval : 1 carat
Category

2010s American Link Bracelets

Materials

Diamond, 18k Gold

Stunning 1.01 Carat Square Cushion Natural Diamond
Located in רמת גן, IL
1.01 Carat D IF Square Cushion Modified Brilliant Cut Natural Diamond with IGI Certificate and
Category

2010s Israeli Loose Gemstones

Materials

Diamond

White Gold Band Ring with Central Square Pavé
Located in Bergamo, BG
square pavé design adorned with brilliant-cut diamonds totaling 0.24 carats. The geometric elegance of
Category

20th Century Italian Fashion Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

Kwiat 18K Yellow Gold Full Eternity Radiant Cut Yellow Diamond Wedding Band
By Kwiat
Located in Houston, TX
-Prong Set in 18 Karat Yellow Gold with: Fifteen (15) cut-cornered square modified brilliant cut natural
Category

21st Century and Contemporary Unknown Wedding Rings

Materials

Yellow Diamond, Gold, 18k Gold, Yellow Gold

Princess Cut Invisible Set Three-Row Diamond Band Ring in 18 Karat Yellow Gold
Located in Scottsdale, AZ
: Square Modified Brilliant Diamond color range: G-H Diamond clarity range: VS Graduated Band width: 7.56
Category

21st Century and Contemporary Unknown Contemporary Band Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Boucheron Princess Cut Diamond Stud Yellow Gold Earrings
By Boucheron
Located in Feasterville, PA
, and a .50ct square modified brilliant cut diamond, The earrings have a total weight of 1.53cts. These
Category

Early 2000s Stud Earrings

Materials

Diamond, Yellow Gold

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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.