Emerald Cut Diamond 20 Carat
Vintage 1920s Art Deco Cocktail Rings
Amethyst, Diamond, Emerald, Platinum
20th Century Unknown Modern Engagement Rings
Diamond, Emerald, Gold, 18k Gold, Yellow Gold
20th Century Unknown Modern Cluster Rings
Diamond, White Diamond, Emerald, Gold, 18k Gold, White Gold
20th Century Unknown Modern Pendant Necklaces
Diamond, White Diamond, Emerald, Gold, 18k Gold, White Gold
21st Century and Contemporary Australian Contemporary Stud Earrings
Spinel, Gold, 9k Gold, Yellow Gold
French Link Necklaces
Emerald, Diamond, Gold Plate, 18k Gold
Early 2000s American Artisan Cocktail Rings
White Diamond, Kunzite, 18k Gold, Yellow Gold
Late 20th Century Unknown Modern Cluster Rings
Diamond, Emerald, Gold, 18k Gold, Yellow Gold
Antique 19th Century Indian More Bracelets
Diamond, Emerald, 22k Gold
20th Century Unknown Modern Band Rings
Amethyst, Diamond, Gold, Yellow Gold, 9k Gold
21st Century and Contemporary Modern Hoop Earrings
Emerald, Diamond, Gold, 18k Gold, Yellow Gold
Early 20th Century Art Deco Engagement Rings
21st Century and Contemporary Unknown Contemporary Cluster Rings
Pearl, Diamond, Emerald, Gold, Yellow Gold
2010s Unknown Modern Bridal Rings
Diamond, Emerald, 18k Gold, White Gold, Yellow Gold
21st Century and Contemporary Unknown Contemporary Three-Stone Rings
Diamond, Emerald, Gold, 18k Gold, White Gold
21st Century and Contemporary Australian Contemporary Bridal Rings
Diamond, Emerald, Gold, 9k Gold, Yellow Gold
21st Century and Contemporary Australian Contemporary Cluster Rings
Diamond, Emerald, Gold, 9k Gold, Yellow Gold
2010s American Artist Link Bracelets
Diamond, Emerald, 14k Gold, Yellow Gold
20th Century Unknown Modern Cluster Rings
Diamond, Ruby, Sapphire, Emerald, 18k Gold, Yellow Gold
21st Century and Contemporary Australian Contemporary Engagement Rings
Diamond, Sapphire, Emerald, Opal, Gold, 18k Gold, Yellow Gold
21st Century and Contemporary Australian Contemporary Cluster Rings
Diamond, Emerald, Ruby, Sapphire, Gold, 9k Gold, Yellow Gold
Early 20th Century Unknown Art Deco Tennis Bracelets
Diamond, Emerald, Platinum
21st Century and Contemporary Unknown Contemporary Band Rings
Diamond, Emerald, Gold, 9k Gold, Yellow Gold
1990s Unknown Modern Cluster Rings
Diamond, Emerald, Gold, 9k Gold, Yellow Gold
20th Century Unknown Modern Cluster Rings
Diamond, Emerald, Gold, Yellow Gold, 14k Gold
Antique 1890s Pendant Necklaces
Diamond, Emerald, Gold, Silver
20th Century Unknown Modern Band Rings
Diamond, Emerald, Gold, 18k Gold, White Gold, Yellow Gold
Antique Early 1900s Unknown Edwardian Drop Earrings
Diamond, Emerald, 15k Gold, Sterling Silver
21st Century and Contemporary Unknown Modern Cocktail Rings
Diamond, Emerald, Yellow Gold
21st Century and Contemporary American Contemporary Clip-on Earrings
Crystal, Diamond, Emerald, Rock Crystal, 18k Gold
2010s British Contemporary Engagement Rings
Diamond, Emerald, Platinum
American More Rings
Diamond, Platinum
21st Century and Contemporary Italian Fashion Rings
Emerald, White Diamond, 18k Gold, White Gold, Yellow Gold
Late 20th Century Italian Chandelier Earrings
Diamond, Emerald, Sapphire, 18k Gold
Vintage 1930s British Art Deco Band Rings
Diamond, Platinum
Mid-20th Century Art Deco Pendant Necklaces
Diamond, Emerald, 18k Gold, Platinum
2010s Contemporary Cocktail Rings
Diamond, Morganite, 14k Gold, White Gold
21st Century and Contemporary American Cocktail Rings
Diamond, Emerald, 14k Gold, Yellow Gold
Late 20th Century Unknown Modern Cocktail Rings
Aquamarine, Diamond, White Diamond, Platinum
20th Century American Art Deco Brooches
Diamond, Emerald, White Gold, Platinum
21st Century and Contemporary American Contemporary Drop Necklaces
Tourmaline, 18k Gold
2010s Indian Contemporary Pendant Necklaces
Diamond, Emerald, 14k Gold, White Gold
2010s Indian Contemporary Pendant Necklaces
Diamond, Emerald, 14k Gold, White Gold
Vintage 1910s More Bracelets
Emerald, Platinum
21st Century and Contemporary American Modern Band Rings
Emerald, Diamond, Yellow Gold, Platinum
2010s American Artist Drop Earrings
Diamond, Emerald, 14k Gold, Yellow Gold
20th Century Edwardian Cluster Rings
Vintage 1910s British Edwardian Engagement Rings
Diamond, Emerald, 18k Gold
21st Century and Contemporary Contemporary Pendant Necklaces
Diamond, Tourmaline, 18k Gold, White Gold
2010s Thai Anglo-Indian Stud Earrings
Diamond, 18k Gold
21st Century and Contemporary Australian Contemporary Engagement Rings
Diamond, White Diamond, Tourmaline, Gold, 18k Gold, White Gold
20th Century Link Bracelets
Emerald, Ruby, Sapphire, Yellow Gold
Late 20th Century Three-Stone Rings
21st Century and Contemporary Australian Contemporary Cluster Rings
Aquamarine, Diamond, White Diamond, Gold, 18k Gold, Yellow Gold
21st Century and Contemporary Australian Contemporary Cluster Rings
Diamond, Tourmaline, 18k Gold, Yellow Gold
21st Century and Contemporary Australian Contemporary Cluster Rings
Diamond, Tourmaline, 18k Gold, Yellow Gold
21st Century and Contemporary Australian Contemporary Cluster Rings
Diamond, Tourmaline, Gold, 18k Gold, White Gold
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Emerald Cut Diamond 20 Carat For Sale on 1stDibs
How Much is a Emerald Cut Diamond 20 Carat?
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.








