2 Carat Old Cut Diamond
Vintage 1920s Art Deco Cocktail Rings
Diamond, Emerald, Platinum
Vintage 1920s Art Deco Brooches
Diamond, Sapphire, Platinum
21st Century and Contemporary American Art Deco Multi-Strand Necklaces
Diamond, Emerald, Sapphire, 14k Gold, Platinum
Vintage 1910s Unknown Edwardian Engagement Rings
Diamond, 18k Gold, Platinum
Antique Late 19th Century American Victorian Cocktail Rings
Diamond, White Diamond, Opal, Gold, 10k Gold, Yellow Gold
21st Century and Contemporary Art Deco Engagement Rings
Diamond, Emerald, Blue Sapphire, 14k Gold, White Gold
Antique 19th Century Brooches
Diamond, White Diamond, Gold, Silver
Early 20th Century Art Deco Cluster Rings
Diamond, Ruby, Platinum
Vintage 1910s British Art Deco Three-Stone Rings
Diamond, Emerald, Gold
Antique Early 1900s British Edwardian Cluster Rings
Diamond, Turquoise, Gold
Antique Late 19th Century Dangle Earrings
Diamond, Platinum
Vintage 1930s Cluster Rings
Diamond, Sapphire, 15k Gold, White Gold
Vintage 1920s Unknown Engagement Rings
Diamond, Gold, 14k Gold, Yellow Gold
Early 20th Century Art Deco Engagement Rings
Diamond, Platinum
Vintage 1920s Art Deco Engagement Rings
Diamond, Platinum
Vintage 1980s English Solitaire Rings
Diamond, White Gold, Yellow Gold
20th Century Pendant Necklaces
Diamond, Emerald, Sapphire, Blue Sapphire, Platinum
20th Century Unknown Engagement Rings
Diamond, Zircon, 18k Gold, White Gold
Late 20th Century Cocktail Rings
Diamond, 18k Gold, White Gold
Vintage 1920s Unknown Drop Earrings
Diamond, Sapphire, White Gold, Platinum
21st Century and Contemporary Modern Engagement Rings
Diamond, Platinum
Vintage 1920s Art Deco Engagement Rings
Diamond, Emerald, Platinum
Vintage 1960s Solitaire Rings
Diamond, 18k Gold, White Gold
20th Century Unknown Cocktail Rings
Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum
Vintage 1910s Unknown Cocktail Rings
Diamond, Sapphire, Platinum
Vintage 1940s Retro Pendant Necklaces
Diamond, Ruby, Platinum
Vintage 1930s Unknown Engagement Rings
Diamond, Platinum
Early 20th Century Art Deco Engagement Rings
Diamond, Platinum
Antique Early 1900s Unknown Cluster Rings
Diamond, Sapphire, 18k Gold, Rose Gold
20th Century American Art Deco Drop Earrings
Diamond, Emerald, Platinum
Antique Early 19th Century Art Deco Pendant Necklaces
Diamond, 18k Gold, Platinum, White Gold
Antique 1880s Victorian Pendant Necklaces
21st Century and Contemporary Victorian Dangle Earrings
Diamond, Emerald, 18k Gold, Yellow Gold, Platinum
20th Century Pendant Necklaces
Diamond, Sapphire, Platinum
21st Century and Contemporary Thai Art Deco Dangle Earrings
Diamond, Topaz, Blue Topaz, 9k Gold, Yellow Gold
Vintage 1930s Art Deco Cocktail Rings
Diamond, Ruby, Star Ruby, Platinum
Vintage 1920s American Art Deco Engagement Rings
Emerald, White Diamond, Platinum
Antique 1880s Unknown Victorian Cluster Rings
Diamond, Sapphire, 18k Gold
2010s Thai Modern Stud Earrings
Diamond, Emerald, Blue Sapphire, 18k Gold, White Gold
Antique 1870s British Victorian More Rings
Diamond, Sapphire, Gold
Antique 1880s Victorian Link Bracelets
Diamond, Gold, 18k Gold, Yellow Gold
Vintage 1950s Unknown Cocktail Rings
Diamond, Pearl, Cultured Pearl, Platinum
Vintage 1930s Unknown Solitaire Rings
Diamond, White Gold
20th Century Beaded Necklaces
Diamond, Pearl, 18k Gold, Yellow Gold
Antique Early 1900s Belle Époque Pendant Necklaces
Diamond, White Diamond, Blue Diamond, Gold, 14k Gold, Silver
20th Century Dangle Earrings
Diamond, Sapphire, Gold, 18k Gold, White Gold
2010s American Solitaire Rings
Aquamarine, Diamond, 14k Gold, White Gold
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Emerald, Platinum
Vintage 1920s Art Deco Engagement Rings
Diamond, Platinum
Vintage 1930s Unknown Art Deco Cocktail Rings
Diamond, Platinum
20th Century Engagement Rings
Diamond, Ruby, Platinum
Vintage 1920s Pendant Necklaces
Diamond, Sapphire, Gold, 18k Gold, Yellow Gold, Silver
Vintage 1970s British Cocktail Rings
Diamond, Garnet, 18k Gold, Yellow Gold
Early 20th Century American Art Deco Pendant Necklaces
Diamond, Emerald, Platinum
Vintage 1950s German Retro Cluster Rings
Cultured Pearl, Pearl, White Diamond, Diamond, 14k Gold, Yellow Gold
Antique 1890s British Victorian Three-Stone Rings
Diamond, Gold, 18k Gold
21st Century and Contemporary Artisan Band Rings
Aquamarine, Diamond, White Diamond, Gold, 18k Gold, Yellow Gold
- 1
- ...
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.