Skip to main content

Modified Diamond

to
91
221
154
101
55
126
419
64
63
24
19
14
42
370
1
2
1
1
1
2
249
172
5
139
46
32
29
27
to
1
24
18
10
9
8
94
52
20
5
2
2
2
423
3
322
24
Natural 0.29ct Gia Undetermined Fancy Intense Yellow VS2 Princess Loose Diamond
Natural 0.29ct Gia Undetermined Fancy Intense Yellow VS2 Princess Loose Diamond

Natural 0.29ct Gia Undetermined Fancy Intense Yellow VS2 Princess Loose Diamond

Located in Houston, TX

Might show minor signs of wear. One (1) square modified brilliant cut natural diamond: Measurements: 3.67mm x 3.57mm x 2.39mm in depth.

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond

Vintage Derco Platinum Diamond Solitaire Engagement Ring 1.51ct GIA cert
Vintage Derco Platinum Diamond Solitaire Engagement Ring 1.51ct GIA cert

Vintage Derco Platinum Diamond Solitaire Engagement Ring 1.51ct GIA cert

Located in Beverly Hills, CA

This refined platinum solitaire ring showcases a 1.51 carat cushion modified brilliant cut diamond with J color and VS2 clarity, offering a beautiful balance of presence, fire, and e...

Category

Late 20th Century Engagement Rings

Materials

Diamond, Platinum

1.30 Carats IGI Certified 18k White & Rose Gold Diamond Halo Ring
1.30 Carats IGI Certified 18k White & Rose Gold Diamond Halo Ring

1.30 Carats IGI Certified 18k White & Rose Gold Diamond Halo Ring

Located in רמת גן, IL

Featuring a spectacular 0.90-carat square-cut cornered modified brilliant center diamond of a unique fancy pinkish brown hue, encircled by twenty-four sparkling colorless to near-col...

Category

2010s Israeli Engagement Rings

Materials

Diamond, 18k Gold, Rose Gold, White Gold

Natural Loose 0.38ct Pear Fancy Vivid Yellow-Orange VS1 Diamond GIA Certified
Natural Loose 0.38ct Pear Fancy Vivid Yellow-Orange VS1 Diamond GIA Certified

Natural Loose 0.38ct Pear Fancy Vivid Yellow-Orange VS1 Diamond GIA Certified

Located in New York, NY

Vivid color like this doesn’t whisper—it captivates. This 0.38ct Pear Modified Brilliant diamond glows in an intensely saturated Fancy Vivid Yellow-Orange, a rare and highly sought-a...

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond

GIA Certified 1.00 Carat Pear Brilliant Fancy Brownish Yellow Natural Diamond
GIA Certified 1.00 Carat Pear Brilliant Fancy Brownish Yellow Natural Diamond

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: Fancy Yellow Cut: Excellent Measurements: 8.28 x 5.26 x 3.30 mm Symmetry: Excelle...

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Yellow Diamond

GIA Certified 1.00 Carat Pear Brilliant Fancy Yellow SI2 Natural Diamond
GIA Certified 1.00 Carat Pear Brilliant Fancy Yellow SI2 Natural Diamond

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 Clarity: SI2 Color: Fancy yellow Cut: Excellent Measurements: 7.77 x 5.26 x 3.33 mm Symme...

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Yellow Diamond

16cttw Wide Openwork Collar Diamond Necklace in 18k White Gold
16cttw Wide Openwork Collar Diamond Necklace in 18k White Gold

16cttw Wide Openwork Collar Diamond Necklace in 18k White Gold

Located in La Jolla, CA

The necklace is secured by a wide modified box clasp with a diamond accent. Total diamond weight is estimated to be 16 carats in total. ...

Category

20th Century Multi-Strand Necklaces

Materials

Diamond, 18k Gold, White Gold

René Boivin Brooch Green Emerald and Old Cut Diamonds 18k Vintage Flower Pin
René Boivin Brooch Green Emerald and Old Cut Diamonds 18k Vintage Flower Pin

René Boivin Brooch Green Emerald and Old Cut Diamonds 18k Vintage Flower Pin

By René Boivin

Located in New York, NY

Weight - 25 grams. Old Cut Diamonds Natural approx F-VS 6.0 Carat+ Natural Emeralds approx 3.0+ carat Center has modified cushion Diamond (5x5mm), all the rest are all round diamond...

Category

Vintage 1940s French Brooches

Materials

Diamond, Emerald, Yellow Gold

Tiffany & Co., Soleste 2.10 Carat Fancy Intense Yellow Diamond Engagement Ring
Tiffany & Co., Soleste 2.10 Carat Fancy Intense Yellow Diamond Engagement Ring

Tiffany & Co., Soleste 2.10 Carat Fancy Intense Yellow Diamond Engagement Ring

By Tiffany & Co.

Located in Chicago, IL

Diamond cut: Modified Brilliant Cushion Carat: 2.10 carats Measurements: 8.15 x 6.66 x 4.58 mm Color: Fancy Intense Yellow Clarity: SI1 Polish: Excellent Symmetry: Very Good Fluoresc...

Category

Early 2000s American Contemporary Engagement Rings

Materials

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

Tiffany & Co. 1.75ct Fancy Vivid Yellow Diamond Ring in 18k White Gold
Tiffany & Co. 1.75ct Fancy Vivid Yellow Diamond Ring in 18k White Gold

Tiffany & Co. 1.75ct Fancy Vivid Yellow Diamond Ring in 18k White Gold

By Tiffany & Co.

Located in Chicago, IL

Soleste ring features a magnificent 1.75-carat oval modified brilliant-cut natural diamond, radiating with a rare and mesmerizing Fancy Vivid Yellow hue.

Category

21st Century and Contemporary Modern Engagement Rings

Materials

Yellow Diamond, 18k Gold

Cartier Paris GIA Certified 7.89 Carat Diamond Platinum Dangle Earrings
Cartier Paris GIA Certified 7.89 Carat Diamond Platinum Dangle Earrings

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, approx. 2.00ct. total weight.

Category

Early 20th Century French Dangle Earrings

Materials

Diamond, White Diamond, Platinum

Peter Suchy 3.89 Carat Black Diamond Halo Gold Dangle Earrings
Peter Suchy 3.89 Carat Black Diamond Halo Gold Dangle Earrings

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 diamonds with a total weight of 3.89cts.

Category

21st Century and Contemporary Dangle Earrings

Materials

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

Vintage 1950’s Platinum Asymmetrical Ribbon Spray Bullet Diamond Brooch Clip 7ct
Vintage 1950’s Platinum Asymmetrical Ribbon Spray Bullet Diamond Brooch Clip 7ct

Vintage 1950’s Platinum Asymmetrical Ribbon Spray Bullet Diamond Brooch Clip 7ct

Located in Winter Springs, FL

A dramatic and highly stylized mid-century design, this exceptional circa 1950s jewel is crafted in platinum and set with approximately 7.30 carats total weight of F to G color VS1–V...

Category

Mid-20th Century Retro Brooches

Materials

Diamond, Platinum

GIA Certified Loose 3.74ct Radiant Cut Natural Diamond E - SI2 - VIDEO!
GIA Certified Loose 3.74ct Radiant Cut Natural Diamond E - SI2 - VIDEO!

GIA Certified Loose 3.74ct Radiant Cut Natural Diamond E - SI2 - VIDEO!

Located in Carmel By The Sea, CA

GIA Certified 3.74ct Cut-Cornered Rectangular Modified Brilliant Diamond E, SI2 VIDEO! Description: This GIA-certified 3.74-carat natural diamond is a stunning cut-cornered rectang...

Category

21st Century and Contemporary American Contemporary Loose Gemstones

Materials

Diamond

1ct Hexagonal Natural Diamond, Unisex Loose Gemstone, Modern Design
1ct Hexagonal Natural Diamond, Unisex Loose Gemstone, Modern Design

1ct Hexagonal Natural Diamond, Unisex Loose Gemstone, Modern Design

Located in New York, NY

ITEM DESCRIPTION Stone Shape: CUSHION MODIFIED BRILLIANT Diamond Weight: 1 ct Our Price: $2499.00 A free online appraisal is included upon request.

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

1ct Hexagonal Natural Diamond, Unisex Loose Gemstone, Modern Design
1ct Hexagonal Natural Diamond, Unisex Loose Gemstone, Modern Design

1ct Hexagonal Natural Diamond, Unisex Loose Gemstone, Modern Design

Located in New York, NY

ITEM DESCRIPTION Stone Shape: CUSHION MODIFIED BRILLIANT Diamond Weight: 1 ct Our Price: $2499.00 A free online appraisal is included upon request.

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Diamond

Estate 18K Fancy Cabochon Cut Rubellite Tourmaline Diamond Dome Cocktail Ring
Estate 18K Fancy Cabochon Cut Rubellite Tourmaline Diamond Dome Cocktail Ring

Estate 18K Fancy Cabochon Cut Rubellite Tourmaline Diamond Dome Cocktail Ring

Located in Winter Springs, FL

Specifications: * Metal: 18 karat yellow gold * Center Stone: Approximately 20.00ct custom-cut modified sugarloaf cabochon tourmaline * Diamonds: Approximately .24ctw round brillian...

Category

Late 20th Century Contemporary Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold

GIA Certified 1.50 Carat Fancy Light Greenish Blue Cushion Cut Loose Diamond
GIA Certified 1.50 Carat Fancy Light Greenish Blue Cushion Cut Loose Diamond

GIA Certified 1.50 Carat Fancy Light Greenish Blue Cushion Cut Loose Diamond

Located in Miami, FL

GIA-certified 1.50 carat natural fancy light greenish blue diamond in cushion modified brilliant cut weighing with SI2 clarity.

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Blue Diamond

18K 1.20 CTW Diamond Ring with Platinum Head and GIA Online Report
18K 1.20 CTW Diamond Ring with Platinum Head and GIA Online Report

18K 1.20 CTW Diamond Ring with Platinum Head and GIA Online Report

Located in Ocala, FL

The design centers on a 0.96-carat cushion modified brilliant-cut diamond, graded G color and VVS1 clarity, creating a bright and refined focal point.

Category

21st Century and Contemporary Contemporary Solitaire Rings

Materials

Diamond, 18k Gold, Platinum

1950s Platinum Diamond Flower Brooch, 29.15ct, Retro Style, France
1950s Platinum Diamond Flower Brooch, 29.15ct, Retro Style, France

1950s Platinum Diamond Flower Brooch, 29.15ct, Retro Style, France

Located in New York, NY

Magnificent flower brooch embellished with diamonds and made in platinum. Designed as two flowers set "en tremblant" in the centers with 2 round diamonds weighing approximately 5.50 ...

Category

20th Century French Retro Brooches

Materials

White Diamond, Platinum

GIA Certified 1.81 Carat Diamond Platinum Engagement Ring
GIA Certified 1.81 Carat Diamond Platinum Engagement Ring

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 brilliant diamond, prong-set to showcase its remarkable brilliance.

Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Platinum

18k White Gold 5.04ctw 5 Stone Diamond Wedding Band
18k White Gold 5.04ctw 5 Stone Diamond Wedding Band

18k White Gold 5.04ctw 5 Stone Diamond Wedding Band

Located in Boca Raton, FL

18k White Gold 5.04ctw 5 Stone Diamond Wedding Band Material: 18K White Gold Diamond Details: This ring features approximately 5.01ctw carats total weight of GIA Certified Square Mo...

Category

21st Century and Contemporary American Modern Wedding Rings

Materials

Diamond, Gold, 18k Gold, White Gold

GIA Certified 6 Carat Fancy Yellow Cushion Diamond Yellow Gold Ring
GIA Certified 6 Carat Fancy Yellow Cushion Diamond Yellow Gold Ring

GIA Certified 6 Carat Fancy Yellow Cushion Diamond Yellow Gold Ring

Located in Chicago, IL

This exceptional ring features a GIA Certified 6.02-carat Fancy Yellow Cushion Modified Brilliant diamond, a striking gem of natural color origin with even color distribution and rem...

Category

2010s American Contemporary Band Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Yellow Gold

GIA Certified 5.56 Ct. Shield Cut Diamond Earrings
GIA Certified 5.56 Ct. Shield Cut Diamond Earrings

GIA Certified 5.56 Ct. Shield Cut Diamond Earrings

Located in Chicago, IL

The first stone is a natural modified pear step cut diamond weighing 2.01 ct, graded I in color and VVS1 in clarity, with excellent polish and very good symmetry.

Category

2010s American Contemporary Stud Earrings

Materials

Diamond, Platinum

GIA Certified 2.02 Carat Natural Diamond Princess Cut F Color SI1 Clarity
GIA Certified 2.02 Carat Natural Diamond Princess Cut F Color SI1 Clarity

GIA Certified 2.02 Carat Natural Diamond Princess Cut F Color SI1 Clarity

Located in Los Angeles, CA

This GIA-certified Natural Rectangular Modified Brilliant Cut / Princess Cut diamond is a stunning piece of jewelry.

Category

21st Century and Contemporary American Art Deco Loose Gemstones

Materials

Diamond

GIA Certified 1.02 Carat Diamond Platinum Engagement Ring
GIA Certified 1.02 Carat Diamond Platinum Engagement Ring

GIA Certified 1.02 Carat Diamond Platinum Engagement Ring

Located in Beverly Hills, CA

This stunning platinum engagement ring centers a GIA-certified 1.02-carat cushion/rectangular modified brilliant diamond, set in classic prongs.

Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified Cushion Diamond  Platinum Engagement Cocktail Ring
GIA Certified Cushion Diamond  Platinum Engagement Cocktail Ring

GIA Certified Cushion Diamond Platinum Engagement Cocktail Ring

By Dover Jewelry

Located in Miami, FL

Displaying a prominent four 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

GIA Fancy Intense Yellow 6.60 carat Diamond Platinum Eternity Ring
GIA Fancy Intense Yellow 6.60 carat Diamond Platinum Eternity Ring

GIA Fancy Intense Yellow 6.60 carat Diamond Platinum Eternity Ring

Located in Miami, FL

This stunning piece features a breathtaking array of GIA-certified square-modified brilliant fancy intense yellow diamonds, totaling approximately 1.40 carats.

Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

GIA Certified Natural 2.52ct Cushion Cut Diamond Platinum Engagement Ring
GIA Certified Natural 2.52ct Cushion Cut Diamond Platinum Engagement Ring

GIA Certified Natural 2.52ct Cushion Cut Diamond Platinum Engagement Ring

Located in Aventura, FL

GIA Certified Natural Cushion Modified Brilliant Diamond set in Platinum. Exceptional GIA-certified natural diamond engagement ring featuring a 2.52 carat Cushion Modified Brilliant ...

Category

21st Century and Contemporary American Modernist Engagement Rings

Materials

Diamond, Platinum

GIA Certified 1.43 Carat Pear Fancy Intense Yellow Si2 Clarity Natural Diamond
GIA Certified 1.43 Carat Pear Fancy Intense Yellow Si2 Clarity Natural Diamond

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: Fancy Intense Yellow Cut: Excellent Measurements: 8.76 x 5.84 x 3.91 mm Symmetry: ...

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Yellow Diamond

1.00 Carat Pear Brilliant Gia Certified L, Faint Brown Si2 Clarity Diamond
1.00 Carat Pear Brilliant Gia Certified L, Faint Brown Si2 Clarity Diamond

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: L, Faint Brown Clarity: SI2 Cut: Excellent Measurements: 8.92 x 6.01 x 2.24 mm Sym...

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, White Diamond, Brown Diamond

GIA Certified 5.02 Carat Cushion Cut Diamond Three-Stone Engagement Ring
GIA Certified 5.02 Carat Cushion Cut Diamond Three-Stone Engagement Ring

GIA Certified 5.02 Carat Cushion Cut Diamond Three-Stone Engagement Ring

Located in Chicago, IL

A magnificent GIA certified 5.02 carat cushion modified brilliant cut diamond ring, presented in a classic and elegant three-stone design.

Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified 1.90ct Natural Cushion Cut Diamond Double Halo Engagement Ring Plt
GIA Certified 1.90ct Natural Cushion Cut Diamond Double Halo Engagement Ring Plt

GIA Certified 1.90ct Natural Cushion Cut Diamond Double Halo Engagement Ring Plt

Located in Carmel By The Sea, CA

GIA Certified 1.90ct Natural Cushion Cut Diamond Double Halo Engagement Ring, Platinum, 1.99ctw Pavé Accents, Size 6.25 Custom-made platinum diamond ring featuring a 1.90 carat natu...

Category

21st Century and Contemporary Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified 0.56 Carat Light Pink SI2 Clarity Diamond
GIA Certified 0.56 Carat Light Pink SI2 Clarity Diamond

GIA Certified 0.56 Carat Light Pink SI2 Clarity Diamond

Located in บางรัก, TH

Known for its soft, romantic appearance, the cushion cut features a higher crown and deeper pavilion, allowing it to reflect light beautifully and create a captivating, Available in ...

Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified Argyle Fancy Intense 0.26 Carat Princess Cut Loose Diamond
GIA Certified Argyle Fancy Intense 0.26 Carat Princess Cut Loose Diamond

GIA Certified Argyle Fancy Intense 0.26 Carat Princess Cut Loose Diamond

Located in Miami, FL

GIA-certified 0.26 carat natural fancy intense Argyle pink diamond in square modified brilliant (princess) cut weighing 0.26 carats with VS2 clarity, measuring 3.61 x 3.59 x 2.26mm.

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Pink Diamond

1.01 Carat Cushion Brilliant GIA Certified Fancy Brown Greenish Yellow Diamond
1.01 Carat Cushion Brilliant GIA Certified Fancy Brown Greenish Yellow Diamond

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 Clarity: NATURAL Color: Fancy Brownish Greenish Yellow Cut: Excellent Measurements: 5....

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, Yellow Diamond

GIA Certified Huge 3.07 CT Natural Diamond Cushion Brilliant Cut I VS1
GIA Certified Huge 3.07 CT Natural Diamond Cushion Brilliant Cut I VS1

GIA Certified Huge 3.07 CT Natural Diamond Cushion Brilliant Cut I VS1

Located in Los Angeles, CA

This loose diamond is a GIA-certified natural cushion modified brilliant cut diamond, offering a balanced combination of size, clarity, and brilliance.

Category

21st Century and Contemporary American Art Deco Loose Gemstones

Materials

Diamond

GIA Certified Platinum 15 Carat Fancy Intense Enhanced Pink Diamond Ring
GIA Certified Platinum 15 Carat Fancy Intense Enhanced Pink Diamond Ring

GIA Certified Platinum 15 Carat Fancy Intense Enhanced Pink Diamond Ring

By Joël Glecer / Orologio

Located in Antwerp, BE

Matching Platinum Wedding Ring can be purchased to go with this Ring as well as on pictures. One of a kind Rare Diamond ! Oval Diamond Weight 15,08 Ct Color : Fancy Intense Pink ...

Category

21st Century and Contemporary Belgian Artisan Wedding Rings

Materials

Pink Diamond, Platinum

NALLY GIA Natural Fancy Green-Yellow Diamond Ring
NALLY GIA Natural Fancy Green-Yellow Diamond Ring

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 center diamond Color: Natural Fancy Green-Yellow, Clarity: VS1.

Category

21st Century and Contemporary American Artist Solitaire Rings

Materials

Yellow Diamond, 18k Gold

Natural 0.24ct Gia Treated Fancy Intense Yellow Half Moon Cut Loose Diamond
Natural 0.24ct Gia Treated Fancy Intense Yellow Half Moon Cut Loose Diamond

Natural 0.24ct Gia Treated Fancy Intense Yellow Half Moon Cut Loose Diamond

Located in Houston, TX

Might show minor signs of wear. One (1) modified cut natural diamond: Measurements: 3.16mm x 5.70mm x 2.03mm in depth.

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond

GIA 3.00 Carat Natural Diamond Pear Brilliant Cut D Color I1 Clarity Deal
GIA 3.00 Carat Natural Diamond Pear Brilliant Cut D Color I1 Clarity Deal

GIA 3.00 Carat Natural Diamond Pear Brilliant Cut D Color I1 Clarity Deal

Located in Los Angeles, CA

Stone Creation - Natural Shape - Pear Modified Brilliant Cut Measurements - 11.83 x 7.83 x 5.17 mm Weight - 3.0 Carat Total Weight of Natural Diamond Pear Brilliant Cut Color - D Cla...

Category

21st Century and Contemporary Art Deco Loose Gemstones

Materials

Diamond

Enlightenment Double Row Emerald and fancy cut diamond ring in white gold
Enlightenment Double Row Emerald and fancy cut diamond ring in white gold

Enlightenment Double Row Emerald and fancy cut diamond ring in white gold

By Ri Noor

Located in Houston, TX

Showcasing a luminous pear-shaped emerald, a striking modified emerald-cut natural diamond, and a radiant rose-cut pear-shaped diamond, it balances boldness with a distinctly feminin...

Category

2010s Engagement Rings

Materials

Diamond, Emerald

GIA Certified 1.10 Carat Fancy Light Pink Pear Cut Diamond Loose
GIA Certified 1.10 Carat Fancy Light Pink Pear Cut Diamond Loose

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 and even color distribution.

Category

21st Century and Contemporary Modern Loose Gemstones

Materials

Pink Diamond

GIA Certified 0.53 Carat Faint Pink VS2 Clarity Diamond
GIA Certified 0.53 Carat Faint Pink VS2 Clarity Diamond

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, making it a popular choice for engagement rings and other fine jewelry.

Category

2010s Asian Loose Gemstones

Materials

Diamond

Natural Princess Cut Diamond Ring Size 6.5 14k Gold 0.35 TCW Certified
Natural Princess Cut Diamond Ring Size 6.5 14k Gold 0.35 TCW Certified

Natural Princess Cut Diamond Ring Size 6.5 14k Gold 0.35 TCW Certified

Located in Brooklyn, NY

Stone: Princess Cut Natural Diamond Stone Cut: Square Modified Brilliant No. of Diamonds: 7 Stone Color: H-I-J Clarity: VS-I1 Measurement: 2.00 x 2.00 mm Total Carat Weight: 0.35 Rin...

Category

2010s American Fashion Rings

Materials

Diamond, 14k Gold

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

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 Weight: 1.01ct Clarity: I1 Color: Fancy Yellow Cut: Excellent Measurements: 5.67 x ...

Category

21st Century and Contemporary Loose Gemstones

Materials

Diamond, Yellow Diamond

Exquisite 6.22 CTW Fancy Yellow Oval Diamond Platinum and 18K Gold Halo Ring
Exquisite 6.22 CTW Fancy Yellow Oval Diamond Platinum and 18K Gold Halo Ring

Exquisite 6.22 CTW Fancy Yellow Oval Diamond Platinum and 18K Gold Halo Ring

Located in Chicago, IL

This breathtaking masterpiece features a magnificent 5.30-carat oval modified brilliant center diamond, radiating a vibrant, natural Fancy Yellow hue with exceptional VS1-VS2 clarity.

Category

21st Century and Contemporary Contemporary Bridal Rings

Materials

Diamond, 18k Gold, Platinum

GIA Certified 1 Carat Cushion Cut Diamond Solitaire Ring G Color VS2 Clarity
GIA Certified 1 Carat Cushion Cut Diamond Solitaire Ring G Color VS2 Clarity

GIA Certified 1 Carat Cushion Cut Diamond Solitaire Ring G Color VS2 Clarity

By Antinori Fine Jewels

Located in Chicago, IL

Timeless elegance meets modern refinement in this beautifully crafted engagement ring, showcasing a 1.00 carat GIA-certified Cushion Modified Brilliant diamond. Set in a sophisticate...

Category

2010s Italian Victorian Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold

Sparkling 1pc Diamond w/ 0.75 ct Cushion E VS1 GIA Certificate
Sparkling 1pc Diamond w/ 0.75 ct Cushion E VS1 GIA Certificate

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 polish and very good symmetry.

Category

2010s Israeli Loose Gemstones

Materials

Diamond

Tiffany & Co. Rare Large Enchanted Bloom Diamond Key Pendant 2.30ct TDW 44206721
Tiffany & Co. Rare Large Enchanted Bloom Diamond Key Pendant 2.30ct TDW 44206721

Tiffany & Co. Rare Large Enchanted Bloom Diamond Key Pendant 2.30ct TDW 44206721

By Tiffany & Co.

Located in Mayfair, London, London

The pendant comprises of an open-work key motif set with one cushion modified brilliant cut diamond, weighing 0.80ct, fancy yellow colour, VVS1 clarity. 6 marquise brilliant cut diam...

Category

2010s American Pendant Necklaces

Materials

Diamond

Tiffany & Co. LEGACY 2.02 tc D VS1 Cushion Diamond Halo Engagement Ring Platinum
Tiffany & Co. LEGACY 2.02 tc D VS1 Cushion Diamond Halo Engagement Ring Platinum

Tiffany & Co. LEGACY 2.02 tc D VS1 Cushion Diamond Halo Engagement Ring Platinum

By Tiffany & Co.

Located in San Diego, CA

Tiffany & Co. LEGACY Cushion Diamond Engagement Ring Style: Halo Ref. number: 26455502/l01150031 Metal: Platinum PT950 Size: 6 Total Diamond Weight: 2.02 tcw Main Diamond: Cushion M...

Category

2010s Engagement Rings

Materials

Diamond, Platinum

18k White Gold 3.9ctw GIA Pear Sapphire Unique Shield Cut Diamond Sides Ring
18k White Gold 3.9ctw GIA Pear Sapphire Unique Shield Cut Diamond Sides Ring

18k White Gold 3.9ctw GIA Pear Sapphire Unique Shield Cut Diamond Sides Ring

Located in Montclair, NJ

Comes w/ the original GIA certification for the sapphire & the 2 diamonds. Stock Number: MK-830367617 --Sapphire Certification Details:-- Laboratory: GIA Report Number: 6233900347 ...

Category

21st Century and Contemporary Three-Stone Rings

Materials

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

GIA Certified 3.03 Carat E Color Internally Flawless Emerald Cut Diamond Ring
GIA Certified 3.03 Carat E Color Internally Flawless Emerald Cut Diamond Ring

GIA Certified 3.03 Carat E Color Internally Flawless Emerald Cut Diamond Ring

By Antinori Fine Jewels

Located in Chicago, IL

GIA Certified 3.03 Carat E Color Internally Flawless Emerald Cut Diamond Ring with Trapezoid Side Stones in Platinum An extraordinary engagement ring centered with a GIA Certified 3...

Category

2010s Italian Contemporary Engagement Rings

Materials

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

Boodles, 11.30 Carats Ashoka Three Stone Diamond Engagement Ring
Boodles, 11.30 Carats Ashoka Three Stone Diamond Engagement Ring

Boodles, 11.30 Carats Ashoka Three Stone Diamond Engagement Ring

By Boodles

Located in Chicago, IL

Designer: Boodles Diamond cut: Ashoka ( Round-Cornered Rectangular Modified Brilliant) Center Diamond GIA Report No.: 15008446 Date: November 10th, 2025 Carat: 5.03 carats Color: I C...

Category

21st Century and Contemporary British Contemporary Engagement Rings

Materials

Diamond, Gold, 18k Gold, Rose Gold

Gia Certified  0.80 Carat K  Si2 Cushion Brilliant Diamond
Gia Certified  0.80 Carat K  Si2 Cushion Brilliant 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 Clarity: SI2 Color: K Faint Brown Cut: Excellent Measurements: 5.63 x 4.63 x 3.73 mm De...

Category

Antique 15th Century and Earlier Loose Gemstones

Materials

White Diamond

GIA Certified 8 Carat Radiant Cut E Color Diamond Engagement Platinum Ring
GIA Certified 8 Carat Radiant Cut E Color Diamond Engagement Platinum Ring

GIA Certified 8 Carat Radiant Cut E Color Diamond Engagement Platinum Ring

By Antinori Fine Jewels

Located in Chicago, IL

This spectacular statement ring showcases a breathtaking 8.05 carat cut-cornered rectangular modified brilliant diamond—also known as a radiant cut—certified by GIA as E color and VS...

Category

2010s Unknown Contemporary Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Platinum

GIA Certified 1.65 Carat Fancy Intense Yellow Diamond Double Halo Ring
GIA Certified 1.65 Carat Fancy Intense Yellow Diamond Double Halo Ring

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 white diamonds and diamond shank in 18k white gold.

Category

21st Century and Contemporary Modern Engagement Rings

Materials

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

GIA 18K White Gold Natural 3.30 Carat Cushion Cut Diamond Engagement Ring
GIA 18K White Gold Natural 3.30 Carat Cushion Cut Diamond Engagement Ring

GIA 18K White Gold Natural 3.30 Carat Cushion Cut Diamond Engagement Ring

By Raymond Lee Jewelers

Located in Boca Raton, FL

GIA 18K White Gold Natural 3.30 Carat Cushion Cut Diamond Engagement Ring Style: Women's Cushion Cut Diamond Ring Material: 18k White Gold Diamond Details: There is one natural Cu...

Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Elegant 0.70ct Cushion Diamond Ring in 18K Yellow Gold
Elegant 0.70ct Cushion Diamond Ring in 18K Yellow Gold

Elegant 0.70ct Cushion Diamond Ring in 18K Yellow Gold

Located in רמת גן, IL

Embrace sophisticated style with a touch of modern flair with this captivating ring, featuring a dazzling 0.7-carat cushion modified brilliant diamond. This unique centerpiece, boast...

Category

2010s Israeli Cocktail Rings

Materials

Diamond, 18k Gold, Yellow Gold

  • 1
Get Updated with New Arrivals
Save "Modified Diamond", and we’ll notify you when there are new listings in this category.

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.