2 Carat Old Cut Diamond
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, White Gold, Yellow Gold
21st Century and Contemporary Brooches
Diamond, Sapphire, 14k Gold, White Gold
20th Century Unknown Cluster Rings
Diamond, Platinum
Mid-20th Century Brooches
Diamond, 10k Gold, White Gold
21st Century and Contemporary Engagement Rings
Diamond, 18k Gold, White Gold
Early 20th Century Lever-Back Earrings
Diamond, 18k Gold, Yellow Gold
20th Century Unknown Engagement Rings
Diamond, 15k Gold, Yellow Gold, Platinum
Antique 1890s British Victorian Engagement Rings
Diamond, 18k Gold, Rose Gold
Antique 1880s Victorian Link Necklaces
Diamond, Gold, 14k Gold, Sterling Silver
Early 20th Century European Edwardian Brooches
Diamond, Ruby, Gold, 14k Gold
Antique Late 19th Century Russian Belle Époque Bridal Rings
Diamond, 14k Gold, Gold, Yellow Gold
Vintage 1920s Engagement Rings
Diamond, 18k Gold, White Gold
Antique Late 19th Century Victorian Beaded Necklaces
Coral, Diamond, 18k Gold
Vintage 1920s Cocktail Rings
Diamond, Sapphire, 18k Gold, White Gold
20th Century Art Deco Cocktail Rings
Diamond, Platinum
21st Century and Contemporary French Brooches
Diamond, Emerald, Platinum
Antique 19th Century American Art Nouveau Pendant Necklaces
Garnet, Diamond, 18k Gold, Silver
Antique Late 19th Century English Victorian Engagement Rings
Diamond, Gold, 18k Gold
Antique Early 1900s French Belle Époque Cluster Rings
Diamond, 18k Gold, Platinum
Antique 1880s Cluster Rings
Diamond, 18k Gold, Yellow Gold
Antique Late 19th Century Belle Époque Brooches
Diamond, Pearl, Gold
21st Century and Contemporary Engagement Rings
Diamond, 18k Gold, White Gold
20th Century Art Deco Pendant Necklaces
Diamond, Gold, 14k Gold, White Gold, Platinum
20th Century Art Deco Link Bracelets
Diamond, Gold, 14k Gold, White Gold, Platinum
Vintage 1910s Edwardian Dome Rings
Diamond, 14k Gold, White Gold
Vintage 1910s Unknown Solitaire Rings
Diamond, Platinum
Vintage 1910s Edwardian Link Bracelets
Diamond, Jade, Platinum
Vintage 1920s Brooches
Diamond, 14k Gold, White Gold
Early 20th Century Unknown Art Nouveau More Rings
Diamond, Emerald, Platinum
Antique 1880s Unknown Victorian Band Rings
Diamond, 18k Gold, Yellow Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, White Gold
Antique 19th Century Victorian Chandelier Earrings
Diamond, Blue Sapphire, Ruby, Sapphire, Platinum, 18k Gold, Yellow Gold
Mid-20th Century Cluster Rings
Diamond, Platinum
Vintage 1920s British Art Deco Tennis Bracelets
Diamond, Platinum
20th Century Victorian Pendant Necklaces
Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, 14k Gold, Yellow Gold
21st Century and Contemporary Contemporary Engagement Rings
Diamond, Sapphire, Platinum
Vintage 1920s Cocktail Rings
Diamond, Platinum
21st Century and Contemporary Cluster Rings
Diamond, Sapphire, 14k Gold, 18k Gold, White Gold, Yellow Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, 18k Gold, White Gold
Vintage 1950s Unknown Cluster Rings
Diamond, 18k Gold, White Gold
Vintage 1930s Art Deco Brooches
Diamond, Platinum
Vintage 1910s Unknown Cocktail Rings
Sapphire, Blue Sapphire, Diamond, Yellow Gold, 22k Gold
Vintage 1930s Art Deco Pendant Necklaces
Diamond, Sapphire, Gold, White Gold
Vintage 1950s Modern Drop Earrings
Diamond, Gold, 14k Gold, White Gold
Vintage 1970s English Wedding Rings
Diamond, Gold, 18k Gold, Yellow Gold
Vintage 1950s Modern Drop Earrings
Diamond, Gold, 14k Gold, White Gold
Antique Late 19th Century Dangle Earrings
Diamond, Onyx, Gold, 14k Gold, Rose Gold, Yellow Gold
2010s British Three-Stone Rings
Diamond, Ruby, Platinum
21st Century and Contemporary Cocktail Rings
Diamond, 14k Gold, White Gold, Yellow Gold
Early 20th Century Art Deco Cluster Rings
Diamond, Ruby, 18k Gold, Yellow Gold, Platinum
Vintage 1930s Art Deco Drop Necklaces
Diamond, Onyx, Platinum
Vintage 1950s Unknown Three-Stone Rings
Diamond, Sapphire, Platinum
Antique Mid-19th Century Victorian Clamper Bracelets
Diamond, 15k Gold, Enamel
Antique Early 1900s Art Nouveau Brooches
Diamond, 14k Gold, Enamel
20th Century Brooches
Diamond, 18k Gold, Enamel
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, White Gold, Yellow Gold
Vintage 1920s Solitaire Rings
Diamond, Platinum
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2 Carat Old Cut Diamond For Sale on 1stDibs
How Much is a 2 Carat Old Cut Diamond?
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 ExpertNovember 8, 2023How big a 2-carat diamond with a princess cut is varies from piece to piece. However, the average size is 7 millimeters by 7 millimeters. The measurement is around 9/32 inches, so a 2-carat princess-cut diamond will be just a little over a quarter-inch in size. On 1stDibs, find an assortment of princess-cut diamond jewelry.