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Tiffany Co. Princess Cut Internally Flawless Diamond Solitaire Ring
By Tiffany Co.
Located in Webster, NY
Modified Brilliant) Center Diamond Color: G Center Diamond Clarity: IF (Internally Flawless) Designer
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified 11.30 Carat Fancy Intense Yellow VS2 Diamond Ring in 18K
By Antinori Fine Jewels
Located in Chicago, IL
diamond, a Modified Rectangular Brilliant Cut, measures 14.65 x 12.13 x 7.44 mm mm, showcasing elegant
Category

2010s American Contemporary Solitaire Rings

Materials

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

GIA Certified 1.00 Carat Pear Brilliant Fancy Brownish Yellow Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56419 Stone Shape: PEAR MODIFIED BRILLIANT Diamond Weight: 1.00ct Color
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Yellow Diamond

Peter Suchy 3.89 Carat Black Diamond Halo Gold Dangle Earrings
By Peter Suchy
Located in Stamford, CT
Peter Suchy black diamond halo dangle earrings. Set with 2 black modified step cut heart shapes
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Black Diamond, 18k Gold, White Gold, Gold

Cartier Paris GIA Certified 7.89 Carat Diamond Platinum Dangle Earrings
By Cartier
Located in Stamford, CT
. Original elongated pear 1900 face up color I to J. 13.89x5.25x3.76mm. 1 modified pear brilliant diamond
Category

Early 20th Century French Dangle Earrings

Materials

Diamond, White Diamond, Platinum

GIA Certified 1.00 Carat Pear Brilliant Fancy Yellow SI2 Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56418 Stone Shape: PEAR MODIFIED BRILLIANT Diamond Weight: 1.00ct
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Yellow Diamond

GIA Certified 1.10 Carat Fancy Light Pink Pear Cut Diamond Loose
Located in Miami, FL
GIA certified 1.10 carat fancy light pink pear modified brilliant natural diamond with SI2 clarity
Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Pink Diamond

Ametrine and Diamond Double Halo Ring in 14KT Yellow Gold
Located in New York, NY
Ametrine Weight: 16.85CT Diamond Weight: 0.64CT Total Weight Cut: Modified Rectangular (Ametrine), Round
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, 14k Gold, Yellow Gold

Tiffany Co. LEGACY 2.02 tc D VS1 Cushion Diamond Halo Engagement Ring Platinum
By Tiffany Co.
Located in San Diego, CA
Metal: Platinum PT950 Size: 6 Total Diamond Weight: 2.02 tcw Main Diamond: Cushion Modified Brilliant
Category

2010s Engagement Rings

Materials

Diamond, Platinum

GIA Certified 3.03 Carat E Color Internally Flawless Emerald Cut Diamond Ring
By Antinori Fine Jewels
Located in Chicago, IL
-Cornered Rectangular Modified Brilliant Diamond, graded E color and Internally Flawless clarity — a truly
Category

2010s Italian Contemporary Engagement Rings

Materials

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

GIA Certified 8 ct Fancy Yellow Diamond Stud Earrings in 18K Yellow Gold
By Antinori Fine Jewels
Located in Chicago, IL
natural Fancy Yellow diamonds, each cut in a cut-cornered square modified brilliant (radiant style). The
Category

2010s Italian Contemporary Stud Earrings

Materials

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

GIA Certified 5.56 Ct. Shield Cut Diamond Earrings
Located in Chicago, IL
exceptional quality and brilliance. The first stone is a natural modified pear step cut diamond weighing 2.01
Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Platinum

Tiffany Co. 1.03 GIA Certified Carat Cushion Diamond Halo Platinum Ring
By Tiffany Co.
Located in Chicago, IL
This exquisite Tiffany Co. ring showcases a GIA certified 1.03 carat cushion modified
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Platinum

GIA Certified 0.97 Carat Buddha Cut Brilliant J SI2 Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC54742 Stone Shape: BUDDHA MODIFIED BRILLIANT Diamond Weight: 0.97ct
Category

21st Century and Contemporary Loose Gemstones

Materials

White Diamond, Blue Diamond, Diamond

GIA Certified 4.01 Carat F-VS1 Cut-Cornered Rectangular Diamond Ring
Located in Chicago, IL
GIA Certified 4.01 Carat F-VS1 Cut-Cornered Rectangular Modified Brilliant Diamond Ring in Platinum
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Sophisticated 6.24ct Diamond Pave Ring in 18K Yellow Gold - GIA Certified
Located in רמת גן, IL
This GIA-certified ring centers on a 5.93ct square modified natural diamond, graded N color and
Category

2010s Singaporean Bridal Rings

Materials

Diamond, 18k Gold, Yellow Gold

GIA Certified 2.04 Carat HPHT VS1 Pear Brilliant Cut Natural Pink Diamond
Located in New York, NY
centerpiece for a custom ring or pendant. Stone Shape: Pear Modified Brilliant Diamond Weight: 2.04 carat
Category

2010s Loose Gemstones

Materials

Pink Diamond

GIA Certified 0.56 Carat Light Pink SI2 Clarity Diamond
Located in บางรัก, TH
"modified" cuts, the cushion diamond offers a blend of vintage charm and modern brilliance. The larger
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 1.81 Carat Diamond Platinum Engagement Ring
Located in Beverly Hills, CA
This exquisite platinum engagement ring centers a GIA-certified 1.81-carat cushion modified
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Platinum

Mario Buccellati Vinatge Three-Stone Diamond 18K Gold Filigree Dome Ring
By Mario Buccellati
Located in Miami, FL
centerpiece is a GIA-certified 1.78 carat Cushion Modified Brilliant diamond in Y-Z color, exhibiting warm
Category

Mid-20th Century Italian Three-Stone Rings

Materials

Diamond, 18k Gold

GIA Certified 3.00 Carat E VS1 Princess Cut Diamond Platinum Engagement Ring
By Antinori Fine Jewels
Located in Chicago, IL
Modified Brilliant) diamond, certified by GIA as E color and VS1 clarity. The stone features exceptional
Category

2010s Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified Cushion Diamond Platinum Engagement Cocktail Ring
By Dover Jewelry
Located in Miami, FL
prong set cushion modified brilliant GIA certified diamond approx. 0.81 carat, H color, VS1 clarity
Category

2010s American Art Deco Engagement Rings

Materials

Diamond, Platinum

NALLY GIA Natural Fancy Green-Yellow Diamond Ring
Located in New York, NY
NALLY Exquisite Diamond Ring, with 3.60 carat Cut-Cornered Rectangular Modified Brilliant Cut
Category

21st Century and Contemporary American Artist Solitaire Rings

Materials

Yellow Diamond, 18k Gold

GIA Certified 1.02 Carat Diamond Platinum Engagement Ring
Located in Beverly Hills, CA
modified brilliant diamond, set in classic prongs. With G color and SI-1 clarity, the center diamond
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

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

NALLY GIA Pink Color Heart Shape Diamond Ring
By Cartier
Located in New York, NY
stock numbered. The center stone is a 2.02ct Heart Modified Brilliant Cut Diamond. of Fancy Purple-Pink
Category

2010s American Artist Solitaire Rings

Materials

Pink Diamond, 18k Gold

GIA Certified 0.53 Carat Faint Pink VS2 Clarity Diamond
Located in บางรัก, TH
. Available in various facets, the cushion cut can be modified to highlight a diamond's unique characteristics
Category

2010s Asian Loose Gemstones

Materials

Diamond

Vintage Platinum Moval Cut Diamond Engagement Ring 2.13ct
Located in Narberth, PA
crafted in platinum and holds a gorgeous moval cut, a type of modified marquise cut, diamond at the center
Category

Vintage 1960s Engagement Rings

Materials

Diamond, Platinum

GIA Certified 1.43 Carat Pear Fancy Intense Yellow Si2 Clarity Natural Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NY56549 Stone Shape: PEAR MODIFIED BRILLIANT Diamond Weight: 1.43ct Color
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Yellow Diamond

GIA Certified 8 Carat Radiant Cut E Color Diamond Engagement Platinum Ring
By Antinori Fine Jewels
Located in Chicago, IL
modified brilliant diamond—also known as a radiant cut—certified by GIA as E color and VS2 clarity. The
Category

2010s Unknown Contemporary Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Platinum

1.00 Carat Pear Brilliant Gia Certified L, Faint Brown Si2 Clarity Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56382 Stone Shape: PEAR MODIFIED BRILLIANT Diamond Weight: 1.00ct Color
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Brown Diamond

Radiant 0.85 Carat Fancy Yellow Diamond Cushion Stud Earrings – Luxury Gift
By Merkaba
Located in Beverly Hills, CA
interested in modifying these Fancy Yellow Diamond earrings or designing an entirely new piece, we’ll help
Category

21st Century and Contemporary American Modern Stud Earrings

Materials

Diamond, White Diamond, Yellow Diamond, Multi-gemstone, 18k Gold, Yellow...

Contemporary Emerald Diamond Floret Collar Necklace
Located in New York, NY
-diamond chain. A modified smaller version of this sparkling diamond cluster is repeated as a third motif 8
Category

21st Century and Contemporary American Chain Necklaces

Materials

Diamond, Emerald, 18k Gold, White Gold

Authentic Tiffany Co. Legacy 1.75 Carat Cushion Diamond Halo Engagement Ring
By Tiffany Co.
Located in Chicago, IL
Tiffany Co. Legacy Engagement Ring featuring a 1.75-carat cushion modified brilliant cut
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

1.01 Carat Cushion Brilliant GIA Certified Fancy Brown Greenish Yellow Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC56237 Stone Shape: CUSHION MODIFIED BRILLIANT Diamond Weight: 1.01ct
Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, Yellow Diamond

7.31 CTW Fancy Intense Yellow Diamond Platinum 18K Gold Engagement Ring GIA
Located in Philadelphia, PA
Centering a modified square brilliant cut diamond weighing 6.01 carats total - fancy intense yellow
Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

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

Tiffany Co. Platinum Novo Princess-Cut Diamond Engagement Ring 0.23ct 3g
By Tiffany Co.
Located in SYDNEY, NSW
modified princess-cut diamond renowned for its exceptional brilliance. The centre diamond is graded F
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Brilliant 1.36ct Princess Round Natural Diamond Ring in 14K White Gold
Located in רמת גן, IL
square modified brilliant-cut natural diamond (F color, SI1 clarity) as its centerpiece. Flanking the
Category

2010s Singaporean Engagement Rings

Materials

Diamond, 14k Gold, White Gold

GIA Certified 7.80 Carat Fancy Yellow Cushion Diamond 18K Yellow Gold Earrings
Located in Chicago, IL
This exquisite pair features two natural fancy yellow cushion modified brilliant diamonds of
Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Yellow Gold

GIA Certified 1.65 Carat Fancy Intense Yellow Diamond Double Halo Ring
Located in Miami, FL
GIA Certified 1.65 carat Fancy Intense Yellow modified brilliant cut diamond with a double halo of
Category

21st Century and Contemporary Modern Engagement Rings

Materials

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

GIA Certified 3.01 Carat E/VS1 Diamond Platinum Three Stone Engagement Ring
Located in Miami, FL
GIA certified 3.01 carat natural cushion modified brilliant diamond three stone engagement ring in
Category

21st Century and Contemporary Modern Three-Stone Rings

Materials

Diamond, Platinum

GIA 5.84 Carats Colombian Emerald Diamond 3-Stone Platinum Ring
By Dover Jewelry
Located in Miami, FL
: Approx. 4.91 carats Side Stones: Two Modified Shield Step-Cut Diamonds Combined Weight: 1.85 carats
Category

21st Century and Contemporary American Art Deco Three-Stone Rings

Materials

Diamond, Emerald, Platinum

GIA Certified 1.01 Carat Rectangular Brilliant Fancy Yellow I1 Natural 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, Yellow Diamond

Gia Certified 0.80 Carat K Si2 Cushion Brilliant Diamond
Located in New York, NY
ITEM DESCRIPTION ID #: NYC55566 Stone Shape: CUSHION MODIFIED BRILLIANT Diamond Weight: 0.80ct
Category

Antique 15th Century and Earlier Loose Gemstones

Materials

White Diamond

Dazzling 1pc Natural Diamond with 0.91ct Cushion I VS2 GIA Certificate
Located in רמת גן, IL
A sparkling natural cushion modified brilliant cut diamond in a 0.91 carat I VS2 with excellent cut
Category

2010s Israeli Loose Gemstones

Materials

Diamond

Sparkling 1pc Diamond w/ 0.75 ct Cushion E VS1 GIA Certificate
Located in רמת גן, IL
One shimmering cushion modified brilliant cut natural diamond in a 0.75 carat E VS1 with excellent
Category

2010s Israeli Loose Gemstones

Materials

Diamond

GIA Certified 2.21 Carat D VS2 Cushion Cut Diamond Platinum Engagement Ring
By Antinori Fine Jewels
Located in Chicago, IL
This elegant platinum engagement ring features a stunning 2.21 carat Cushion Modified Brilliant
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Contemporary 2.06 CTW Oval Diamond 18K Gold Solitaire Engagement Ring GIA
Located in Philadelphia, PA
Centering a modified oval step-cut diamond weighing 2.06 carats J color with VS2 clarity - set with
Category

21st Century and Contemporary Contemporary Solitaire Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

1.25 Carat Natural Sapphire Diamond Cluster Necklace 14 Karat
Located in New York, NY
.25ct. Natural Sapphire 1.00ct. diamonds Modified cluster H-color Vs-2 clarity 19.20 X
Category

2010s American Pendant Necklaces

Materials

Diamond, Sapphire, 18k Gold, White Gold

14K White Gold Mosaic of Elegance Multi-Colored Diamond Ring
Located in New York, NY
with sophistication. Diamonds:0.18 CT Vivid orange yellow 0.30 CT Modified Square Pink Purple Diamond
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

White Diamond, Yellow Diamond, Gold, 14k Gold, White Gold

Elegant 0.70ct Cushion Diamond Ring in 18K Yellow Gold
Located in רמת גן, IL
dazzling 0.7-carat cushion modified brilliant diamond. This unique centerpiece, boasting the coveted I
Category

2010s Israeli Cocktail Rings

Materials

Diamond, 18k Gold, Yellow Gold

GIA Certified 0.42 Carat Light Pink Brown SI2 Clarity Diamond
Located in บางรัก, TH
jewelry. Our oval shaped diamond is a modified round cut that features an elongated, oval form with
Category

2010s Asian Loose Gemstones

Materials

Diamond

Natural Yellow and White Diamonds Ring in 18kt Gold, 2.30 cts tw.
Located in Miami, FL
yellow diamond •Modified square cut diamond • Vivid saturation and eye clean clarity • Prong set in warm
Category

2010s American Contemporary Engagement Rings

Materials

White Diamond, Yellow Diamond, Gold, 18k Gold

GIA Certified Fancy Green-Blue Diamond – 0.12 Carat Natural Oval Brilliant
Located in Portland, OR
, this exquisite oval modified brilliant diamond is small in size but carries an extraordinary presence
Category

2010s South African Loose Gemstones

Materials

Blue Diamond

GIA Certified 3.01 Carat E/VS1 Diamond Platinum Three Stone Engagement Ring
Located in Miami, FL
GIA certified 3.01 carat natural cushion modified brilliant diamond three stone engagement ring in
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Platinum

Belle Epoque 1.80 Ct. Diamond Plus Platinum ring
Located in Napoli, IT
modified rectangular cushion cut Diamond rather flat in cut that spreads for 1.80 Ct (8.13 mm. x 7.12 mm
Category

Early 20th Century European Belle Époque Engagement Rings

Materials

Diamond, Platinum

GIA Certified 4.01 Carat F/VS1 Emerald Cut Diamond Ring with Trillion Side Stone
By Antinori Fine Jewels
Located in Chicago, IL
GIA Certified 4.01 Carat F/VS1 Emerald Cut Diamond Ring with Trillion Side Stones in Platinum An
Category

2010s Italian Contemporary Engagement Rings

Materials

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

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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.