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Sparkling 1 Pc Natural Diamond with 0.51 Ct D VVS1, IGI Certificate
Located in רמת גן, IL
Sparkling natural cut cornered modified rectangular diamond in a 0.51 carat D VVS1 excellent cut. This
Category

2010s Israeli Loose Gemstones

Materials

Diamond

A lovely 6.22 Cut-Cornered Rectangular Modified Yellow Diamond Ring
By H H Jewels
Located in Miami, FL
It will take her breath way A lovely 6.22 Cut-Cornered Rectangular Modified Yellow Hued Diamond
Category

2010s American Bridal Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

Natural Rectangular Modified Brilliant Diamond in a 0.50 Carat D VS, GIA Cert
Located in רמת גן, IL
Natural cut-cornered rectangular modified brilliant diamond in a 0.50 carat D VS2 with Beautiful
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Exquisite 1.19 Carat Modified Brilliant Cut Diamond Ring in 18K White Gold
Located in רמת גן, IL
This exquisite ring showcases a magnificent cut cornered rectangular modified brilliant diamond
Category

2010s Israeli Cocktail Rings

Materials

Diamond, 18k Gold, White Gold

Elegant 1.01 Carat Rectangular Diamond Ring in 18K White Gold
Located in רמת גן, IL
-cornered rectangular modified brilliant diamond, boasting an exceptional E color and VS1 clarity for
Category

2010s Israeli Engagement Rings

Materials

Diamond, 18k Gold, White Gold

3.01 Carat Radiant Cut Diamond Ring
Located in San Francisco, CA
Gorgeous Ring Features One 3.01ct Cut Corner Rectangular Modified Brilliant (Radiant Cut) Diamond
Category

20th Century Unknown Engagement Rings

Materials

Diamond, Platinum

NALLY GIA Fancy Yellow Diamond Earrings
Located in New York, NY
Stunning...... Pendant Earrings. Center Rectangular Modified Diamonds 10.16 carat Natural
Category

2010s American Contemporary Dangle Earrings

Materials

Diamond, Platinum

2.09 Carat Natural Fancy Color Diamond Three-Stone Ring
By J. Birnbach
Located in New York, NY
2.09ct, Natural Fancy Purplish Pink color, SI1 clarity, Cut-Cornered Rectangular Modified Brilliant
Category

21st Century and Contemporary American Engagement Rings

Materials

Blue Diamond, Diamond, Pink Diamond, Platinum, Rose Gold

GIA Certified 5.05 Carat Radiant Diamond Platinum Engagement Ring
Located in Cape May, NJ
magnificent 5.05 carat Cut-cornered Rectangular Modified Brilliant Cut K color, Si2 clarity diamond comes with
Category

2010s Engagement Rings

Materials

Diamond, Platinum

GIA Certified 10.02 Carat Princess Cut Diamond Ring
By Diana M. Jewels
Located in New York, NY
Certified Platinum diamond engagement ring with rectangular modified brilliant cut diamond in the
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold

GIA Certified 2.64 Carat Fancy Light Yellow Diamond Ring
Located in New York, NY
features a 2.64-carat cut-cornered rectangular modified brilliant-cut diamond, with fancy light yellow
Category

1990s Unknown Modern Three-Stone Rings

Materials

Diamond, Yellow Diamond, 18k Gold

Impressive GIA Cert Fancy Yellow Diamond Earclips
Located in New York, NY
Impressive GIA certified Fancy Yellow diamond clip on earrings Cut Cornered rectangular modified
Category

21st Century and Contemporary American Clip-on Earrings

Materials

Diamond, Platinum, 18k Gold

1.82 Carat Certified Radiant Cut Diamond Engagement Ring
Located in Webster, NY
Cornered Rectangular Modified Brilliant Center Diamond Color: EGL- G-H, Graded to GIA Standards J Center
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold

Rare Natural Fancy Intense Blue Diamond Ring G.I.A.
Located in New York, NY
diamond flanked by pair of Pink Color Rectangular Modified brilliant diamonds. Center diamond is
Category

21st Century and Contemporary American Solitaire Rings

Materials

Diamond, Platinum

Ritani GIA Certified Princess-cut Diamond Platinum Engagement Ring
By Ritani
Located in Miami, FL
rectangular modified brilliant diamond weighing approx. 1.01 ct, graded F color and SI1 clarity. The sparkling
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Graff Platinum and Diamond Pendant- Ear-Clips
By Graff
Located in New York, NY
-cornered rectangular modified brilliant diamonds weighing 4.26 carats GIA certified diamonds (2.25 ct., F
Category

Late 20th Century British Artist Chandelier Earrings

Materials

Diamond, Platinum

Tacori Platinum 1.26 ct Diamond Ring TA01-090624
By Tacori
Located in Southampton, PA
platinum shank with a four-prong crown that securely cradles a 1.01-carat modified rectangular brilliant
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified 4.04 Carat Radiant Cut Diamond Pave Halo Engagement Ring
By J. Birnbach
Located in New York, NY
rectangular modified brilliant-cut diamond has I color and SI1 clarity.
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified, 10.11 Carat Total Weight Fancy Yellow Diamond Dangle Earrings
Located in Beverly Hills, CA
rectangular modified brilliant shaped diamond. The color distribution is even and there is no fluorescence
Category

2010s Unknown Modern Hoop Earrings

Materials

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

1.16 Carat Diamond Set Platinum Engagement Ring GIA
Located in Litchfield, CT
rectangular modified brilliant-cut diamond, similar to a princess cut (G color, VS1 clarity, GIA report
Category

1990s American Engagement Rings

Materials

White Diamond, Platinum

GIA Certified 2.53 Carat Princess Cut Diamond Pave Frame Halo Platinum Ring
By J. Birnbach
Located in New York, NY
Grading Report 11642553, which states that the 2.53 carat rectangular modified brilliant cut diamond has H
Category

21st Century and Contemporary Cluster Rings

Materials

Diamond, White Diamond, Platinum

Certified Fancy Yellow Three-Stone Diamond Ring in Platinum and 18 Karat Gold
Located in Webster, NY
Center Diamond Carat Weight: 1.07CT Diamond Cut: Cut Cornered Rectangular Modified Brilliant Center
Category

2010s Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

J.E. Caldwell GIA Natural Fancy Purplish Pink Diamond Platinum Engagement Ring
Located in San Francisco, CA
with Rose Gold Detail. The color is evenly distributed through this breathtaking Rectangular Modified
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Pink Diamond, 18k Gold, Platinum

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

Princess Cut Diamond Halo Engagement Ring in 18 Karat White Gold
Located in Webster, NY
Diamond Carat Weight: Approximately .69CT Center Diamond Cut: Modified Rectangular Cut Center Diamond
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold

Bold Brilliance: 1.45 Carat Radiant Diamond Ring with Dazzling Accents
Located in רמת גן, IL
-cornered rectangular modified brilliant diamond, also known as a radiant cut diamond, as its radiant
Category

2010s Israeli Engagement Rings

Materials

Diamond, 18k Gold, White Gold

GIA 4.11 Carat Yellow Diamond Platinum Gold Three-Stone Engagement Ring
Located in Stamford, CT
rectangular modified very light yellow diamond, VVS2 VS approx. 4.11cts GIA Certificate # 621360413 EGL
Category

21st Century and Contemporary Engagement Rings

Materials

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

2 Pcs Natural Diamonds, 1.04 Ct, Radiant, D Colourless , VS2, VS1, GIA Cert
Located in רמת גן, IL
Pair of natural cut-cornered rectangular modified brilliant diamond in a 0.50, 0.54 carat D VS1
Category

2010s Israeli Loose Gemstones

Materials

Diamond

GIA Certified 7.50 Carat Diamond Ring in 18 Karat White Gold
By Kaufmann de Suisse
Located in Dallas, TX
supports a cut-corner, rectangular modified brilliant diamond in the center, surrounded by bead-set, full
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold, White Gold

GIA Certified 2.09 Light Yellow Three-Stone Natural Diamond Engagement Ring
Located in Baltimore, MD
rectangular modified brilliant Accent diamonds: 2 radiant natural diamonds approx. .60 CTW G VS Size: 6 (US
Category

21st Century and Contemporary North American Modern Engagement Rings

Materials

Diamond, Yellow Gold, Platinum

Gorgeous 18k White Gold 3 Stone Ring w/ 1.06 Ct Natural Diamonds GIA Certificate
Located in רמת גן, IL
A marvelous ring with a dazzling 0.71 carat rectangular modified brilliant natural diamond. It has
Category

2010s Israeli Three-Stone Rings

Materials

Diamond, 18k Gold, White Gold

GIA Custom 18 Carat Engagement Ring 1.38 Carat
By GIA
Located in SYDNEY, NSW
engagement ring. Centre Cut-Cornered Rectangular Modified Brilliant diamond set in four claw Tiger setting
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Gold, Yellow Gold

No Reserve, 1.14cttw Fancy Diamond Halo, 14 Karat, White Gold Ring
By Diamonds Mine
Located in Ramat Gan, IL
Rectangular Modified Brilliant Side Stone Diamonds Round: Weight: 0.13 cttw Color: G-H Clarity: VS Item
Category

2010s Israeli Art Deco Wedding Rings

Materials

Diamond, Brown Diamond, 14k Gold, White Gold

$1 NO RESERVE! - 1.73 Cttw Fancy Diamond Halo, 14 Karat White Gold Ring
By Diamonds Mine
Located in Ramat Gan, IL
: Weight: 1.53 Carat Color: Natural Fancy Dark Brown Clarity: SI2 Shape: Cut Cornered Rectangular Modified
Category

2010s Israeli Art Deco Wedding Rings

Materials

Diamond, Brown Diamond, 14k Gold, White Gold

Vintage French GIA 2.02 Carat Rectangular Brilliant Cut Diamond 18k Gold Ring
Located in Beverly Hills, CA
One Vintage French GIA 2.02 Carat Rectangular Modified Brilliant Cut Diamond 18k Yellow Gold Ring
Category

Vintage 1980s Engagement Rings

Materials

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

1.02 Carat Rectangular Brilliant Gia Certified Fancy Intense Orangy Yellow Diamo
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56547 Stone Shape: CUT-CORENRED RECTANGULAR MODIFIED BRILLIANT Diamond
Category

Antique 15th Century and Earlier Loose Gemstones

Materials

White Diamond

Two-Color Gold, Fancy Yellow Diamond and Diamond Ring
Located in New York, NY
-cornered rectangular modified brilliant Fancy Yellow diamond approximately 2.11 cts., edged and flanked by
Category

21st Century and Contemporary Unknown Artist Engagement Rings

Materials

Diamond, 18k Gold

3-Stone Platinum 2.02ct GIA Certified Diamond Sapphire Ring
Located in Cincinnati, OH
Stunning three stone diamond and sapphire ring. Diamond is GIA certified. Center rectangular
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

Fancy Intense Yellow 2.33 Carat Diamond Engagement Ring in Platinum with GIA
Located in San Diego, CA
Center Diamond Shape: Radiant ( Round-Cornered Rectangular Modified Brilliant ) 1.01 CTS Diamond Color
Category

2010s Engagement Rings

Materials

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

Custom 1.06 Carat GIA Princess Cut Diamond White Gold Ring
Located in San Francisco, CA
This contemporary low profile ring features a glistening GIA H/VS1 modified rectangular brilliant
Category

2010s American Modern Engagement Rings

Materials

Diamond, 18k Gold

Fancy Light Radiant Diamond Engagement Ring 18 Karat Gold 5.00 Carat
Located in San Diego, CA
ctw approximately Center Diamond Shape: Radiant ( Cut-Cornered Rectangular Modified Brilliant ) 3.02
Category

2010s Bridal Rings

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Loose Diamond, 2.02ct, GIA Certified Cut-Cornered Rectangular Modified Brilliant
Located in Vienna, VA
Loose Diamond, 2.02ct, GIA Certified, Cut-Cornered Rectangular Modified Brilliant Cut Loose Cut
Category

Antique 15th Century and Earlier Loose Gemstones

Materials

Diamond

GIA Report Certified Cut-Cornered Rectangular Modified Brilliant Cut Diamond
Located in Surfside, FL
GIA report certified engagement ring cut-cornered rectangular modified brilliant cut diamond 1.01
Category

20th Century Engagement Rings

Materials

Diamond, White Gold

14K 6.60ctw Tanzanite Diamond Earrings - Rectangular Step Cut Pear Modified
Located in Holtsville, NY
Count: 18 * Stone Shape: Cut Cornered Rectangular Step Cut, Pear Modified Brilliant * Stone Color
Category

2010s American Artist Stud Earrings

Materials

Diamond, Tanzanite, 14k Gold

GIA Report Certified Rectangular Modified Brilliant Cut Diamond Ring, 1.49 Carat
Located in Surfside, FL
GIA report certified rectangular modified brilliant cut diamond 1.49 carat (H color, VS2 clarity
Category

20th Century Engagement Rings

Materials

Diamond, Yellow Gold

GIA Certified Rectangular Modified Brilliant Cut Diamond 1.01cts F, SI1 Ring
Located in Surfside, FL
GIA certified rectangular modified brilliant cut diamond 1.01 carat (F color, SI1 clarity) ring set
Category

20th Century Fashion Rings

Materials

White Gold

GIA Certified Rectangular Modified Brilliant Cut Diamond 1.01cts F, SI1 Ring
Located in Surfside, FL
GIA certified rectangular modified brilliant cut diamond 1.01 carat (F color, SI1 clarity) ring set
Category

20th Century Fashion Rings

Materials

White Gold

GIA Certified Rectangular Modified Brilliant 1.01 Carat Diamond, F Color, I3
Located in Surfside, FL
GIA certified rectangular brilliant modified 1.01 carats diamond (F color, I3 clarity) ring set in
Category

20th Century Engagement Rings

Materials

White Gold

Fancy Intense Yellow Diamond White Diamond Cluster Earrings
Located in Greenwich, CT
Yellow diamond and white diamond cluster earrings, composed of a pair of rectangular modified
Category

21st Century and Contemporary American Contemporary Clip-on Earrings

Materials

Diamond, 18k Gold, Platinum

18 Karat Gold Radiant Cut Diamond Halo Engagement Ring, 0.81 Carat of Diamond
By By Design Jewelers
Located in Coral Gables, FL
One (1) 18k white gold engagement ring contains one (1) Cut-Cornered Square Rectangular Modified
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

2.01 Carat Diamond Platinum Engagement Ring
Located in Los Angeles, CA
. This ring is made from platinum and features an EGL appraised Rectangular Modified Brilliant cut
Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Emerald, Platinum

GIA 5.55 Carat Fancy Light Yellow Cushion Diamond Three-Stone Platinum Ring
Located in Pikesville, MD
GIA certified fancy light yellow round-cornered rectangular modified brilliant diamond, VS2 clarity
Category

Early 2000s American Contemporary Engagement Rings

Materials

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

Tiffany Co. 3-Stone Diamond Engagement Ring .79 Carat F VVS2
By Tiffany Co.
Located in Middletown, DE
. This stunning ring has an investment grade .79 ct Modified Rectangular Lucida Cushion cut diamond
Category

Early 2000s American Engagement Rings

Materials

Diamond, Platinum

GIA certified, Diamond Eternity platinum band
Located in Surfside, FL
GIA certified, cut-cornered rectangular modified brilliant Diamonds eternity band in platinum
Category

21st Century and Contemporary Fashion Rings

Materials

Platinum

GIA Certified Diamonds Eternity Band Approx. 15 Cararts
Located in Surfside, FL
GIA-certified, cut-cornered rectangular modified brilliant Diamonds eternity band in platinum
Category

2010s Modern Engagement Rings

Materials

Platinum

TIFFANY CO Diamond Platinum Engagement Ring 2.79ctw G/VS1
By Tiffany Co.
Located in Lambertville, NJ
CUT CORNERED RECTANGULAR MODIFIED BRILLIANT DIAMOND - 2.09ct (SEE CERTIFICATE PICTURES FOR ADDITIONAL
Category

American Bridal Rings

GIA Certified 0.67 Carat Fancy Light Yellow-Green Cocktail Ring
Located in Miami, FL
18 karat white gold ring containing a 0.67 carat prong set cut-cornered rectangular modified
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, 18k Gold

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Modified Rectangular Diamond For Sale on 1stDibs

You are likely to find exactly the modified rectangular diamond you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of gold, 18k gold and white gold, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect modified rectangular diamond may mean sifting through those created during different time periods — you can find an early version that dates to the 20th 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 modified rectangular diamond from J. Birnbach, Graff and Peter Suchy — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for a radiant cut iteration of this accessory, while there are also emerald cut cut and brilliant cut cut versions available here, too. Finding a modified rectangular diamond for sale for women should be easy, but there are 17 pieces available to browse for unisex as well as men, too.

How Much is a Modified Rectangular Diamond?

Prices for a modified rectangular diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $712 and can go as high as $610,200, while this accessory, on average, fetches $15,300.

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.