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Vivid Diamonds GIA Certified 6.02 Carat Diamond Engagement Ring
By Vivid Diamonds
Located in Miami, FL
selected and perfectly matched trapezoid modified brilliant cut diamonds weighing .80 carats total J color
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

2 Pcs Natural Square Modified Brilliant Diamond in a 1.04 Carat J VS2, GIA Cert
Located in רמת גן, IL
Natural square modified brilliant diamond in a 0.53, 0.51 carat J VS2 with Beautiful cut and shine
Category

2010s Israeli Loose Gemstones

Materials

Diamond

J. Birnbach GIA Certified 1.68 Carat Modified Triangular Brilliant Ring
By J. Birnbach
Located in New York, NY
certified 1.68 ct Modified Triangular Brilliant diamond of J color and VS1 clarity. Set within a double
Category

21st Century and Contemporary American Contemporary Fashion Rings

Materials

Diamond, Platinum

J. Birnbach GIA Certified 3.71 Carat Cushion Modified Brilliant Three-Stone Ring
By J. Birnbach
Located in New York, NY
This scintillating ring features a 3.71 carat cushion modified brilliant cut diamond of I color and
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Platinum

3.02CT Modified Pear Step Cut Yellow Art Deco Pendant, Set in 18KY, GIA
Located in New York, NY
one-of-a-kind natural 3.02CT Modified PeIntroducing a one-of-a-kind 3.02CT Modified Pear Step Cut
Category

21st Century and Contemporary American Art Deco Chain Necklaces

Materials

Diamond, 18k Gold

Fancy Intense Yellow Diamond and Diamond Ring
Located in Palm Beach, FL
Fancy Intense Yellow Diamond & Diamond Ring Set with a cut-cornered Square-Modified cut diamond
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond

Double diamond ring
Located in New York, NY
setting 1.02 carat Cushion Modified brilliant diamond Color: Natural Fancy Yellow G.I.A. Certified
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

Platinum Ceylon Sapphire and Diamond Ring
Located in New York, NY
vivid blue center stone is framed by 2.10 carats of G–VS modified baguette-cut diamonds in an elegant
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Diamond Gold Engagement Ring
Located in Miami, FL
crafted in solid 18k white gold. Centered with 1 genuine modified brilliant cut natural diamond approx
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

GIA Diamond Engagement Ring 0.50ct
By GIA
Located in SYDNEY, NSW
Unique features: Cushion Modified Brilliant Cut Diamond engagement ring 0.5ct Metal: Platinum
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

4.06 Carat Cushion Cut Diamond Stud Earrings
Located in Chicago, IL
Diamond: Cushion Modified Brilliant cut Setting: four prong, halo flush set Halo Diamonds: 0.35
Category

21st Century and Contemporary Contemporary Stud Earrings

Materials

Diamond, Platinum

Diamond Set Victorian Earrings
Located in Litchfield, CT
cut, and modified rose-cut diamonds HALLMARKS: 18k STOCK NUMBER: 22348 Jewelry acquired from
Category

Antique 1880s French Victorian Dangle Earrings

Materials

White Diamond, Diamond, 18k Gold, Yellow Gold

Platinum 1.80ct Diamond Ring
By LB Exclusive
Located in Southampton, PA
This luxury ring is endlessly impressive. A 1.50 carat GIA-Certified cushion modified brilliant
Category

21st Century and Contemporary Cluster Rings

Materials

Diamond, Platinum

1.33 Carats Fancy Yellow Diamond White Diamond 14 Karat Gold Engagement Ring
Located in Philadelphia, PA
Featuring a modified cushion brilliant fancy colored diamond weighing 0.53 carat Natural fancy
Category

Early 2000s Contemporary Fashion Rings

Materials

Diamond, White Diamond, Yellow Diamond, Gold, 14k Gold, White Gold, Yell...

Contemporary 2.60 Carats Fancy Yellow Diamond White Diamond 18 Karat Gold Ring
Located in Philadelphia, PA
Centering a modified cushion brilliant yellow diamond weighing 1.52 carats Set in 18 karat yellow
Category

Early 2000s Contemporary Cocktail Rings

Materials

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

Sapphire Diamond Platinum Engagement Ring
Located in Greenwich, CT
This modified emerald cut (asscher) diamond ring with baguette cut sapphire halo bezel set with
Category

Vintage 1920s American Art Deco Bridal Rings

Materials

Blue Sapphire, Diamond, Sapphire, White Diamond, Platinum

GIA Certified Triple Halo Diamond Ring
Located in Webster, NY
#6203010955 Center Diamond Carat Weight: 1.61CT Center Diamond Cut: Cushion Modified Brilliant Center
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold

Tiffany Co. Sunlight Diamond Platinum Ring
By Tiffany Co.
Located in New York, NY
one cushion modified brilliant cut diamond weighing 1.09 carats, Fancy Intense Yellow color, VS2
Category

21st Century and Contemporary Bridal Rings

Materials

Diamond, Yellow Diamond, Platinum, Yellow Gold

Stunning 1 pcs Diamond 1.01 ct Cushion D VS1, Natural Diamonds IGI Certificate
Located in רמת גן, IL
1 Luxurious natural cushion modified cut diamond in a 1.01 carat D VS1 gorgeous diamond with a very
Category

2010s Israeli Loose Gemstones

Materials

Diamond

14k White Gold Cushion 2.20ct Diamond Engagement Ring with Pave Diamond Mounting
Located in Scottsdale, AZ
The 2.20ct modified cushion cut center diamond flashes light at every sight! The center stone is
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold, White Gold

CARTIER White Gold Diamond Clip Earrings
By Cartier
Located in Carmel-by-the-Sea, CA
Beautiful 18k white gold and diamond modified hoop style earrings, numbered and signed "Cartier
Category

20th Century Clip-on Earrings

Materials

Diamond, Platinum

2.07 Carat Cushion Diamond Platinum Engagement Ring
By J. Birnbach
Located in New York, NY
, Cushion Modified Brilliant cut diamond with 0.38ctw halfmoon diamond sidestones. This beauty is the
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Diamond, Platinum

Certified Halo Style Diamond Engagement Ring
Located in Webster, NY
This vintage style engagement ring features a .58CT Modified Round Brilliant Cut Celebration
Category

2010s Engagement Rings

Materials

Diamond, 18k Gold

Platinum Ring Natural 3.01 Carat Cushion Diamond GIA D SI1 with Pink Diamonds
Located in Los Angeles, CA
A stunning Platinum Ring set with a 3.01 carat Cushion Modified Brilliant diamond measuring
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

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

9.16 Carat Fancy Yellow Radiant Cut Diamond Ring with White Heart Shaped Diamond
Located in Birmingham, AL
, Fancy Yellow, Cut Cornered, Square, Modified, Brilliant Diamond that is flanked by two white heart
Category

2010s American Modern Three-Stone Rings

Materials

Diamond, Platinum

H H 1.00 Carat Diamond Engagement Ring
By H H Jewels
Located in Miami, FL
lovely 1.00 carat diamond set at center (GIA #2151437850). This modified radiant cut diamond is H in
Category

2010s Engagement Rings

Materials

Diamond, Platinum

Cartier Sculpted Diamond Dome Ring
By Cartier
Located in Carmel-by-the-Sea, CA
yellow gold and set with approximately 3 carats of brilliant white diamonds. The modified dome shape
Category

Late 20th Century Dome Rings

Materials

Diamond, 18k Gold, Yellow Gold

Platinum Three Diamond Ring, 1.92ctw
Located in Palm Desert, CA
diamonds are modified radiant-cut and set in four prong basket settings. The center diamond is larger
Category

Early 2000s Unknown Contemporary Three-Stone Rings

Materials

Diamond, Platinum

Tiffany Soleste Yellow Diamond Platinum Pendant
By Tiffany Co.
Located in New York, NY
: 0.87ct, Cushion Modified Cut -Diamonds: 0.76ct, VS clarity, E-F color -Retail: $22,000
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

French Deco Diamond Platinum Ring
Located in Litchfield, CT
striking geometry. Two 1.0 carat diamonds (F color, VS clarity) are surrounded by gorgeous square modified
Category

Vintage 1920s French Art Deco Cocktail Rings

Materials

White Diamond, Platinum

Cushion Cut 4.50 Carats Diamond Ring
By Mehnaz Durrani
Located in Richmond, BC
Cushion modified brilliant cut diamond ring, encased in open mount, set in four round headed prongs
Category

21st Century and Contemporary Canadian Contemporary Bridal Rings

Materials

Diamond, 18k Gold

Tiffany Co 1.63 Carat Fancy Yellow Diamond
By Tiffany Co.
Located in SYDNEY, NSW
Unique features: Tiffany & Co 1.63ct Fancy Yellow Diamond Cushion Modified Brilliant 1.63 Carat
Category

21st Century and Contemporary Loose Gemstones

Materials

Yellow Diamond

5.33ct Natural Fancy Intense Yellow Diamond Ring
Located in San Francisco, CA
Beautiful Natural Fancy Intense Yellow Cushion Modified Brilliant Cut Diamond for 5.33cts, SI2 in
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold

1950s Asscher Diamond Platinum Engagement Ring
Located in Miami, FL
high quality modified asscher cut diamond approx. 3.17cttw, H-I color, VS1-VS2. The eye-cathing center
Category

Vintage 1950s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. Legacy Fancy Yellow Diamond Platinum Ring
By Tiffany Co.
Located in New York City, NY
" collection by Tiffany & Co. This beautiful modified brilliant cushion cut yellow diamond features no
Category

Late 20th Century Engagement Rings

Materials

White Diamond, Yellow Diamond, Platinum

Bespoke GIA Diamond Engagement Ring 1.06ct
Located in SYDNEY, NSW
single Square Modified , brilliant cut Diamond, colour F, and clarity VS2. Weighing 1.06 ct
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. Bezet Diamond Solitaire Engagement Ring
By Tiffany Co.
Located in London, GB
clarity and I colour, square modified brilliant cut diamond within a chic platinum rubover setting. This
Category

21st Century and Contemporary Unknown Engagement Rings

Materials

Diamond, Platinum

Art Deco Onyx Opal Diamond Ring
Located in Carmel-by-the-Sea, CA
Platinum ring, a modified crown design, with diamond-studded split prongs supporting an 11 carat
Category

Vintage 1930s Art Deco Cocktail Rings

Materials

Diamond, Opal, Onyx, Platinum

GIA Certified 5.17 Carat Natural Fancy Yellow Diamond Ring
Located in Webster, NY
Cut-Cornered Square Modified Brilliant Cut Diamond. The featured Diamond has very rare internally
Category

2010s Engagement Rings

Materials

Diamond, Yellow Diamond, 14k Gold

2.01 Carat Radiant Cut Diamond Platinum Ring
Located in San Francisco, CA
Features a Cornered Rectangular Modified Brilliant (Radiant) Cut 2.01ct Diamond with a GIA Report
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

GIA Certified Double Halo Diamond Engagement Ring
Located in Webster, NY
Diamond Carat Weight: .96CT Center Diamond Cut: Cushion Modified Brilliant Center Diamond Color: G Center
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 14k Gold

5.05 Carat GIA Cert Cushion Diamond Platinum Engagement Ring
By J. Birnbach
Located in New York, NY
, Cushion Modified Brilliant cut diamond center stone with approximately 1.20ctw pear shape diamond
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White 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

Cartier Destinee 1.59 Carat Platinum Diamond Engagement Ring
By Cartier
Located in San Diego, CA
Diamond Shape: Cushion Modified Brilliant 1.03 Diamond Color & Clarity: E / VVS2 Accent Diamonds
Category

2010s Engagement Rings

Materials

Diamond, Platinum

9.27 Carat Cushion Cut Diamond Engagement Ring
By Ritani
Located in Chicago, IL
This absolutely stunning ring features a 9.27 carat cushion modified brilliant cut diamond with D
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

8.02 Carat Cushion Cut Diamond Engagement Ring
Located in Chicago, IL
This absolutely stunning ring features a 8.02 carat cushion modified brilliant cut diamond with J
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Champagne Diamond Mixed Pattern Bracelet
By Rare Colors
Located in New York, NY
This 14.45-carat bracelet showcases an artistic array of nineteen mixed-shape modified step-cut
Category

2010s American Modern Modern Bracelets

Materials

Yellow Diamond, 18k Gold, Yellow 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

Fine Blue Sapphire Diamond Platinum Ring
Located in Litchfield, CT
.85ct = 1.70cttw, G color SI2 and SI1 clarity modified calf's head cut diamonds HALLMARKS: PT for
Category

Vintage 1950s American Three-Stone Rings

Materials

Blue Sapphire, Diamond, Platinum

Modernist Gold and Diamond Pinkie Ring, 1970s
Located in Cincinnati, OH
framing a polished rectangular plaque enhanced with 21 round white modified collet-set diamonds
Category

Vintage 1970s Unknown Modernist Fashion Rings

Materials

Diamond, 18k Gold

Graff Fancy Yellow Diamond "Bullseye" Necklace
By Graff
Located in New York, NY
- shaped modified brilliant-cut diamond, weighing 1.58 carat Color is Fancy Intense Yellow, Clarity is VS1
Category

1990s British Artist Drop Necklaces

Materials

Yellow Diamond, 18k Gold

Graff Fancy Yellow Diamond "Bullseye" Necklace
By Graff
Located in New York, NY
- shaped modified brilliant-cut diamond, weighing 1.58 carat Color is Fancy Intense Yellow, Clarity is VS1
Category

1990s British Artist Drop Necklaces

Materials

Yellow Diamond, 18k Gold

Canturi 18ct White Gold GIA Diamond Pendant 1.54ct
Located in SYDNEY, NSW
A Canturi Diamond Pendant, made of 18ct White Gold. Featuring a Solitaire Cushion Modified
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, White Gold

Platinum Square Emerald Cut Diamond Engagement Ring
By Manfredi
Located in Greenwich, CT
Platinum Engagement Ring with a Square Modified Emerald cut Diamond 3.24 carat w/bullets 0.65 carat
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

GIA Certified, 2.20 Carat Fancy Light Yellow Diamond Ring
Located in Beverly Hills, CA
a natural cushion modified brilliant cut diamond. The color is Fancy Light Yellow with clarity of
Category

2010s Unknown Modern Three-Stone Rings

Materials

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

Natural Fancy Intense 5.01 Carat Yellow Diamond Gold Ring
Located in San Francisco, CA
-Cornered Modified Brilliant Cut VVS1 Diamond and the polish is Excellent. The Yellow Diamond is flanked by
Category

21st Century and Contemporary Unknown Contemporary Three-Stone Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

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Modified Diamond For Sale on 1stDibs

Surely you’ll find the exact modified diamond you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Frequently made of Gold, 18k Gold and Platinum, 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 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. For this particular piece, .5 Carat and 1 Carat are consistently popular carat weights. A modified diamond from Khai Khai Jewelry, Antinori Fine Jewels and J. Birnbach — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for a cushion cut iteration of this accessory, while there are also trillion cut cut and round cut cut versions available here, too. If you’re browsing our inventory for a modified diamond, 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 Modified Diamond?

On average, a modified diamond at 1stDibs sells for $13,890, while they’re typically $1,325 on the low end and $415,000 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.