2 Carat Old Cut Diamond
Vintage 1920s Art Deco Three-Stone Rings
Diamond, Sapphire, Platinum
Vintage 1950s North American Modern Cluster Rings
Diamond, 18k Gold, White Gold, Yellow Gold
20th Century Drop Earrings
Diamond, 18k Gold, Silver
21st Century and Contemporary Art Deco Engagement Rings
Diamond, Emerald, Onyx, 18k Gold, White Gold
Vintage 1920s French Art Deco Cluster Rings
Diamond, Emerald, Gold, 18k Gold, Platinum
Early 20th Century American Edwardian Brooches
Diamond, Platinum
Antique Early 1900s Edwardian Pendant Necklaces
Diamond, Emerald, Yellow Gold, Platinum
21st Century and Contemporary Unknown Art Deco Cocktail Rings
Diamond, Platinum
Vintage 1920s Solitaire Rings
Antique 19th Century Engagement Rings
Spinel, 18k Gold
Vintage 1930s American Art Deco Engagement Rings
Diamond, Platinum
2010s British Modern Engagement Rings
White Diamond, Platinum
Vintage 1950s Dutch Retro Three-Stone Rings
Diamond, Ruby, 14k Gold
Antique Early 1900s Pendant Necklaces
Vintage 1920s Art Deco Engagement Rings
Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum
Vintage 1920s Art Deco Dangle Earrings
18k Gold
Vintage 1910s Dutch Art Nouveau Brooches
Diamond, 14k Gold
20th Century French Victorian Fashion Rings
Diamond, Opal, Gold, 18k Gold, Yellow Gold
Vintage 1950s Dutch Retro Three-Stone Rings
Diamond, 18k Gold
Antique 1880s Brooches
Diamond, Pearl, Natural Pearl, 14k Gold, Silver
21st Century and Contemporary Cocktail Rings
Diamond, Ruby, Gold, 14k Gold, Yellow Gold
Antique Late 19th Century European Victorian Brooches
Diamond, 18k Gold
Antique 1890s Unknown Victorian Cluster Rings
Emerald, Diamond, Gold, Yellow Gold, White Gold, 18k Gold
Vintage 1910s American Fashion Rings
Diamond, Emerald, Platinum
20th Century Engagement Rings
Diamond, Platinum
2010s Dutch Modern Three-Stone Rings
Diamond, Sapphire, 18k Gold
2010s American Art Deco Cocktail Rings
Diamond, Rose Gold
Vintage 1930s Unknown Art Deco Bangles
Diamond, 14k Gold, White Gold, Platinum
2010s American Contemporary Dangle Earrings
Diamond, White Gold
Early 20th Century Unknown Art Deco Drop Necklaces
Diamond, Gold, 14k Gold, White Gold
21st Century and Contemporary Art Deco Cocktail Rings
Diamond, Ruby, 18k Gold, White Gold
Vintage 1970s Italian Retro Cluster Rings
Diamond, Rubelite, White Gold, 18k Gold
2010s Modernist Drop Earrings
Diamond, 18k Gold, White Gold
Vintage 1910s Dutch Art Nouveau Brooches
Diamond, 14k Gold, Platinum
20th Century Unknown Art Deco Cocktail Rings
Diamond, Gold, 14k Gold, White Gold
Early 20th Century Unknown Art Deco Pendant Necklaces
Diamond, Crystal, 14k Gold, White Gold
Vintage 1930s North American Art Deco Engagement Rings
Diamond, Emerald, 14k Gold, White Gold
Vintage 1920s Art Deco Solitaire Rings
Diamond, Gold, 18k Gold, White Gold
Antique Late 19th Century Engagement Rings
Antique Early 1900s Unknown Engagement Rings
Diamond, 22k Gold, Platinum
Vintage 1910s Edwardian Bangles
Diamond, Gold, 14k Gold, Yellow Gold
Antique 19th Century Unknown Belle Époque Engagement Rings
Diamond, Gold, 18k Gold, Yellow Gold, Silver
2010s American Solitaire Rings
Diamond, 14k Gold, White Gold
Vintage 1930s Brooches
Diamond, Emerald, 18k Gold
21st Century and Contemporary Engagement Rings
Diamond, Platinum
Vintage 1910s Dangle Earrings
Vintage 1920s Art Deco Link Bracelets
Diamond, Emerald, Rock Crystal, 18k Gold, White Gold, Platinum
Early 20th Century Unknown Art Deco Engagement Rings
Diamond, Gold, 14k Gold, Yellow Gold
Antique 1890s English Late Victorian Engagement Rings
Diamond, Sapphire, Blue Sapphire, 18k Gold, Yellow Gold
Antique 1890s Choker Necklaces
Early 20th Century Unknown Belle Époque Pendant Necklaces
Diamond, Pearl, Gold, 14k Gold
Early 20th Century British Edwardian Engagement Rings
Diamond, 18k Gold, White Gold
Vintage 1930s Art Deco Engagement Rings
Diamond, 18k Gold, Yellow Gold, Platinum
20th Century Colombian Art Deco Drop Necklaces
Diamond, White Diamond, Emerald, 18k Gold, Gold, White Gold
20th Century Unknown Edwardian Cocktail Rings
Diamond, Yellow Gold, White Gold, 14k Gold, Gold
Vintage 1920s Art Deco Engagement Rings
Diamond, Platinum
Vintage 1910s Dutch Art Deco Brooches
Diamond, Pearl, Ruby, 18k Gold, 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.