Trapezoid Diamonds
1990s Modern Engagement Rings
Diamond, Gold, 18k Gold, White Gold
2010s Stud Earrings
Diamond, Ruby, Gold, 18k Gold, White Gold
2010s American Cocktail Rings
White Diamond, Diamond, Ruby, Platinum
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Platinum
2010s Italian Contemporary Three-Stone Rings
Diamond, White Diamond, Platinum
Mid-20th Century Cocktail Rings
Diamond, Emerald, Platinum
21st Century and Contemporary More Rings
Diamond, White Diamond, Ruby, Platinum
21st Century and Contemporary Engagement Rings
Diamond, Platinum
2010s American Contemporary Engagement Rings
White Diamond, Diamond, Emerald, Platinum
Vintage 1980s Unknown Three-Stone Rings
Diamond, Sapphire, Platinum
21st Century and Contemporary British Artist Pendant Necklaces
Diamond, Pink Diamond, Cultured Pearl, Platinum
2010s Italian Modern Stud Earrings
Diamond, White Diamond, Emerald, 18k Gold
2010s American Contemporary Engagement Rings
White Diamond, Yellow Diamond, Platinum, Yellow Gold
Late 20th Century Brooches
Diamond, Platinum
2010s Italian Modern Stud Earrings
Diamond, White Diamond, Emerald
2010s American Contemporary Three-Stone Rings
Yellow Diamond, White Diamond, Diamond, Platinum
20th Century Art Deco Cluster Rings
Diamond, Platinum
Early 20th Century Fashion Rings
Diamond, Platinum
20th Century Indian Retro Stud Earrings
White Diamond, 18k Gold, Yellow Gold
2010s American Contemporary Clip-on Earrings
Diamond, Black Diamond, Blue Sapphire, 14k Gold, White Gold, Platinum
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, 18k Gold, White Gold
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Platinum
2010s Italian Solitaire Rings
Diamond, Yellow Diamond, 18k Gold, Yellow Gold
2010s American Drop Earrings
White Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum
2010s American Contemporary Engagement Rings
Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum
2010s American Three-Stone Rings
Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum
2010s American Engagement Rings
Diamond, Yellow Diamond, Platinum
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Platinum
2010s American Engagement Rings
Diamond, White Diamond, Yellow Diamond, Platinum
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Platinum
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Emerald, Platinum
21st Century and Contemporary Contemporary Cocktail Rings
Yellow Diamond, White Diamond, Diamond, Yellow Gold, White Gold, 18k Gol...
21st Century and Contemporary American Modern Engagement Rings
Diamond, 18k Gold, Platinum
20th Century Contemporary Engagement Rings
Diamond, Platinum
2010s American Contemporary Engagement Rings
Yellow Diamond, Gold, Platinum
21st Century and Contemporary American Modern Three-Stone Rings
Diamond, Platinum
Vintage 1960s European Retro Cocktail Rings
Diamond, Emerald, 18k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Yellow Diamond, Yellow Gold, Gold, 18k Gold, Whi...
2010s American Contemporary Three-Stone Rings
Diamond, Emerald, 18k Gold, Platinum
21st Century and Contemporary American Modern Pendant Necklaces
Diamond, Sapphire, Platinum
21st Century and Contemporary Engagement Rings
Diamond, Yellow Diamond, 18k Gold, Platinum
2010s Italian Contemporary Solitaire Rings
Diamond, White Diamond, Ruby, Platinum
Vintage 1910s Edwardian Brooches
Diamond, Onyx, Platinum
2010s American Contemporary Engagement Rings
Diamond, Yellow Diamond, Platinum
2010s Unknown Contemporary Cluster Rings
Diamond, White Diamond, Emerald, Platinum
2010s Italian Modern Solitaire Rings
Diamond, White Diamond, Yellow Diamond, Gold, 18k Gold, Yellow Gold, Pla...
2010s American Three-Stone Rings
Diamond, Emerald, 18k Gold, Platinum
2010s Italian Modern Solitaire Rings
Diamond, White Diamond, Emerald, Sapphire, Platinum
2010s Three-Stone Rings
Diamond, Yellow Diamond, 18k Gold, Platinum
2010s Israeli Art Deco Cocktail Rings
Yellow Diamond, 18k Gold
20th Century Unknown Contemporary Dome Rings
Diamond, 18k Gold, White Gold
21st Century and Contemporary Engagement Rings
Diamond, Yellow Diamond, 18k Gold, Platinum
Vintage 1980s French Retro Dome Rings
Diamond, White Diamond, Emerald, Gold, 18k Gold, Yellow Gold
2010s Italian Modern Solitaire Rings
White Diamond, Sapphire, Blue Sapphire, Diamond, Platinum
2010s Italian Contemporary Engagement Rings
Diamond, White Diamond, Gold, 18k Gold, White Gold
2010s Engagement Rings
Diamond, Yellow Diamond, 18k Gold, Platinum
2010s Indian Contemporary Drop Earrings
Diamond, Yellow Diamond, Platinum
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Trapezoid Diamonds For Sale on 1stDibs
How Much are Trapezoid Diamonds?
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.
Finding the Right Rings for You
Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.
No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.
Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.
Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. 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.
The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry.
The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.
Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.
- 1stDibs ExpertFebruary 22, 2021A triangle shaped diamond is called a Triangular brilliant or a Trilliant or Trillion. They are cut so that there are three equally straight sides and are often cut from shallow double crystals.
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Colorful Gemstones Are a Brilliant Choice for Engagement Rings
If diamonds don’t seem right, what about a magnificent sapphire, ruby or emerald?
Our Guide to Fancy-Colored Diamond Engagement Rings
Accounting for just 1 percent of all diamonds, these marvels of nature are exceedingly rare and gorgeously complex.
Our Guide to Victorian, Edwardian and Art Deco Engagement Rings
Learn about these antique jewelry styles, then choose a design that speaks to you.