2 Carat Old Cut Diamond
Antique Late 19th Century European Victorian Brooches
Diamond, Natural Pearl, 18k Gold, Silver
Antique 19th Century Pendant Necklaces
Diamond, Gold, 14k Gold, Yellow Gold, Platinum
Early 20th Century Unknown Multi-Strand Necklaces
Diamond, Natural Pearl, Yellow Gold, Platinum
21st Century and Contemporary American Contemporary Band Rings
Diamond, White Diamond, Gold, 14k Gold, White Gold
Vintage 1920s German Cocktail Rings
Emerald, White Diamond, Diamond, 14k Gold, Yellow Gold, White Gold
Antique 1880s Unknown Victorian Three-Stone Rings
Diamond, Emerald, 18k Gold, Yellow Gold
Antique 1890s Victorian Band Rings
Diamond, Gold, 18k Gold, Yellow Gold
Antique 1890s Victorian Brooches
Diamond, White Diamond, Garnet, Ruby, Gold, 18k Gold, Yellow Gold, Silver
Vintage 1930s British Art Deco Three-Stone Rings
Diamond, Platinum, 18k Gold, White Gold
Antique Early 1900s Cocktail Rings
Diamond, 14k Gold, White Gold, Yellow Gold
Antique 19th Century Unknown Victorian Chandelier Earrings
Diamond, Natural Pearl, Gold, Silver
Vintage 1920s British Art Deco Engagement Rings
Diamond, Sapphire, 18k Gold, Yellow Gold, Platinum
Vintage 1920s French Art Deco More Bracelets
Diamond, Platinum
Vintage 1920s Unknown Three-Stone Rings
Diamond, 18k Gold, White Gold, Yellow Gold
Antique 1890s European Victorian Dangle Earrings
Diamond, Pearl, 18k Gold, Silver
Late 20th Century Modernist Drop Necklaces
Coral, Diamond, Onyx, Platinum
Antique Early 1900s American Late Victorian Brooches
Diamond, Ruby, 14k Gold, Silver
Antique 1880s Victorian Three-Stone Rings
Diamond, Sapphire, Gold, 18k Gold, Yellow Gold, Sterling Silver
Antique Late 19th Century Victorian Pendant Necklaces
Diamond, White Diamond, Pearl, 14k Gold, Rose Gold
Vintage 1920s Art Nouveau Engagement Rings
Diamond, Gold, 18k Gold, Yellow Gold
2010s American Contemporary Stud Earrings
Diamond, Chalcedony, 18k Gold, Yellow Gold
Vintage 1960s English Cocktail Rings
Cultured Pearl, Pearl, Diamond, Gold, 18k Gold, White Gold
Vintage 1920s European Art Deco Three-Stone Rings
Diamond, Sapphire, Platinum
Vintage 1940s Engagement Rings
Diamond, 14k Gold, Yellow Gold
2010s American Contemporary Stud Earrings
Diamond, Amethyst, 18k Gold, Yellow Gold
Vintage 1930s American Art Deco Cocktail Rings
Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, White Gold
Antique 19th Century Unknown Victorian Pendant Necklaces
Diamond, Turquoise, Gold, 14k Gold, Yellow Gold
Vintage 1930s British Art Deco Three-Stone Rings
Diamond, Platinum, 18k Gold, White Gold
Vintage 1920s Unknown Three-Stone Rings
Diamond, 18k Gold, Yellow Gold
Early 20th Century Engagement Rings
Diamond, 18k Gold, Yellow Gold
Antique 1880s British Victorian Wedding Rings
Diamond, 18k Gold, Yellow Gold
2010s Thai Contemporary Pendant Necklaces
Diamond, Amethyst, 18k Gold, Yellow Gold
Early 20th Century Unknown Edwardian Drop Necklaces
Diamond, White Diamond, Opal, Pearl, Platinum, Sterling Silver
Vintage 1940s European Art Deco Cluster Rings
Diamond, Onyx, Platinum
Vintage 1910s Edwardian Brooches
Diamond, Gold, 14k Gold, Yellow Gold, Platinum
Vintage 1920s Cocktail Rings
Diamond, 18k Gold, White Gold
2010s American Stud Earrings
Diamond, 14k Gold, White Gold
Vintage 1910s British Edwardian Pendant Necklaces
Diamond, Pearl, Platinum
Vintage 1940s Unknown Engagement Rings
Diamond, Emerald, 18k Gold, White Gold
Vintage 1940s Unknown Solitaire Rings
Diamond, 18k Gold, Yellow Gold, Gold
Antique Late 19th Century Art Nouveau Brooches
White Diamond, 10k Gold, Yellow Gold
Antique Late 19th Century Victorian Brooches
Diamond, Emerald, Pearl, Ruby, Blue Sapphire, Gold, 18k Gold, Silver
2010s American Contemporary Necklace Enhancers
Diamond, Turquoise, 18k Gold, Yellow Gold
Early 20th Century Unknown Art Deco Engagement Rings
Diamond, Emerald, Platinum
Early 20th Century Unknown Art Deco Cocktail Rings
Diamond, White Diamond, Gold, 10k Gold, 18k Gold, White Gold
2010s Thai Contemporary Pendant Necklaces
Diamond, Brown Diamond, 18k Gold, Yellow Gold
Late 20th Century Italian Modernist Dangle Earrings
Diamond, White Diamond, Quartz, Ruby, Gold, 18k Gold, Yellow Gold
Vintage 1960s American Retro Wedding Rings
Diamond, Gold, 14k Gold, White Gold, Yellow Gold
Vintage 1970s Cocktail Rings
Diamond, Sapphire, 18k Gold, White Gold
Vintage 1910s English Engagement Rings
Diamond, 18k Gold, Yellow Gold
Antique Late 19th Century Art Nouveau Brooches
White Diamond, 14k Gold, Yellow Gold
Vintage 1920s Engagement Rings
Diamond, 18k Gold, White Gold
2010s American Stud Earrings
Diamond, 14k Gold, Yellow Gold
2010s American Stud Earrings
Diamond, 14k Gold, White Gold
21st Century and Contemporary Art Deco Engagement Rings
Diamond, Emerald, 18k Gold, White Gold
Vintage 1920s Unknown Art Deco Engagement Rings
Diamond, Ruby, Platinum
Vintage 1920s Art Deco Cluster Rings
Diamond, Sapphire, Blue Sapphire, 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.