Modified Cushion
21st Century and Contemporary Brazilian Arts and Crafts Loose Gemstones
Amethyst, Citrine
21st Century and Contemporary Nigerian Modern Loose Gemstones
Aquamarine
21st Century and Contemporary Pendant Necklaces
Tanzanite, 14k Gold, Yellow Gold
2010s Unknown Contemporary Fashion Rings
Diamond, Emerald, 14k Gold, White Gold
20th Century Engagement Rings
Diamond, Platinum
21st Century and Contemporary Afghan Contemporary Loose Gemstones
Tourmaline
2010s Thai Fashion Rings
Spinel, 14k Gold, Rose Gold
Late 20th Century French Modern Cocktail Rings
Amethyst, Diamond, 18k Gold, Yellow Gold
21st Century and Contemporary Solitaire Rings
Diamond, Gold, 18k Gold, Yellow Gold
21st Century and Contemporary American Contemporary Wedding Rings
Diamond, Platinum
Vintage 1940s American Art Deco Wrist Watches
Gold-filled
21st Century and Contemporary Unknown Engagement Rings
Diamond, Gold, 18k Gold, White Gold
20th Century American Modern Bangles
Crystal, Rock Crystal, 18k Gold, Yellow Gold
2010s Israeli Loose Gemstones
Diamond
2010s Israeli Stud Earrings
Diamond, 18k Gold, White Gold
2010s American Contemporary Engagement Rings
Diamond, 18k Gold
2010s Israeli Loose Gemstones
Diamond
2010s American Contemporary Pendant Necklaces
Amethyst, Citrine, Diamond, Pearl, 18k Gold
21st Century and Contemporary Unknown Engagement Rings
Diamond, 14k Gold, White Gold, Gold
2010s Hong Kong Modern Fashion Rings
Yellow Diamond, 18k Gold, White Gold
2010s Israeli Loose Gemstones
Diamond
21st Century and Contemporary Contemporary Cocktail Rings
Yellow Diamond, 18k Gold
2010s Israeli Loose Gemstones
Diamond
2010s Israeli Loose Gemstones
Diamond
2010s American Modern Engagement Rings
Diamond, Yellow Diamond, 18k Gold, Yellow Gold
2010s American Contemporary Engagement Rings
Diamond, Yellow Diamond, Gold, 18k Gold, Yellow Gold
2010s Israeli Engagement Rings
Diamond, 18k Gold, Yellow Gold
20th Century Engagement Rings
Diamond, Platinum
2010s Israeli Engagement Rings
Diamond, Gold, 18k Gold, White Gold
2010s Israeli Loose Gemstones
Diamond
2010s Israeli Loose Gemstones
Diamond
2010s Israeli Loose Gemstones
Diamond
2010s Israeli Loose Gemstones
Diamond
2010s Israeli Engagement Rings
Diamond
2010s Israeli Loose Gemstones
Diamond
2010s Israeli Loose Gemstones
Diamond
2010s American Fashion Rings
Diamond, Tourmaline
2010s American Fashion Rings
Sapphire, Tourmaline, Gold
21st Century and Contemporary Engagement Rings
Diamond, Gold, 14k Gold, White Gold
2010s Israeli Loose Gemstones
Diamond
Late 20th Century Unknown Modern Cocktail Rings
Diamond, Garnet, Rhodolite, 18k Gold, Yellow Gold, Platinum
21st Century and Contemporary Indian Art Deco Cocktail Rings
Diamond, Emerald, Gold, 14k Gold, 10k Gold, Rose Gold, White Gold, Yello...
21st Century and Contemporary Australian Contemporary Engagement Rings
Diamond, Tourmaline, Gold, 18k Gold, White Gold
2010s Brazilian Loose Gemstones
Amazonite, Garnet
2010s Asian Loose Gemstones
Diamond
21st Century and Contemporary Contemporary Stud Earrings
Diamond, Platinum
2010s American Contemporary Engagement Rings
Diamond, Platinum
20th Century Engagement Rings
White Gold
2010s Israeli Cocktail Rings
Diamond, 18k Gold, Yellow Gold
2010s Asian Loose Gemstones
Diamond
2010s Asian Loose Gemstones
Diamond
2010s Israeli Loose Gemstones
Diamond
2010s Asian Loose Gemstones
Diamond
2010s Asian Loose Gemstones
Diamond
21st Century and Contemporary Asian Modern Loose Gemstones
Sapphire
2010s Colombian Loose Gemstones
Emerald
2010s Colombian Loose Gemstones
Emerald
21st Century and Contemporary American Artist Engagement Rings
Diamond, Platinum
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Modified Cushion For Sale on 1stDibs
How Much is a Modified Cushion?
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 rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.
- 1stDibs ExpertOctober 5, 2021A cushion-brilliant cut diamond contains larger facets and does not have a crushed ice look unlike cushion-modified brilliant. Cushion-modified brilliant is a variation of cushion brilliant shape which has an appearance of a well-cut radiant shape diamond. Find a wide variety of cushion-brilliant and cushion-modified brilliant diamondjewelry on 1stDibs.