2 Carat Old Cut Diamond
Antique 19th Century Unknown Victorian Pendant Necklaces
Diamond, Gold, 14k Gold, Yellow Gold
Vintage 1930s Unknown Art Deco Fashion Rings
Diamond, White Gold, Palladium
Vintage 1920s Art Deco Cocktail Rings
Diamond, Platinum
Vintage 1930s Unknown Art Deco Engagement Rings
Diamond, 14k Gold, White Gold
Early 20th Century Engagement Rings
Diamond, Brown Diamond, Platinum
Vintage 1920s Art Deco Engagement Rings
Diamond, Gold, 14k Gold, Enamel
20th Century Unknown Art Deco Cocktail Rings
Diamond, 14k Gold, White Gold
Early 20th Century Necklace Enhancers
Diamond, Gold, 14k Gold, Yellow Gold
Antique 1880s French Victorian Brooches
Diamond, White Diamond, Ruby, Gold, 18k Gold, Yellow Gold
20th Century Cocktail Rings
Diamond, White Gold
Vintage 1910s Unknown Solitaire Rings
Diamond, Platinum
Vintage 1920s Unknown Cocktail Rings
Diamond, Turquoise, White Gold
Early 20th Century Art Deco Link Bracelets
Diamond, Platinum
Early 20th Century Three-Stone Rings
Diamond, 18k Gold, White Gold, Gold
21st Century and Contemporary Engagement Rings
Diamond, Sapphire, Blue Sapphire, Platinum
Early 20th Century Engagement Rings
Diamond, Sapphire, Gold, 18k Gold, White Gold
Antique Early 1900s French Cocktail Rings
Emerald, Diamond, 14k Gold, Yellow Gold
Mid-20th Century Solitaire Rings
Diamond, 14k Gold, White Gold, Yellow Gold
Vintage 1930s Unknown Cocktail Rings
Blue Diamond, Zircon, Diamond, 18k Gold, Yellow Gold
21st Century and Contemporary Modern Engagement Rings
Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, White Gold
Vintage 1930s Art Deco Brooches
Diamond, Onyx, Platinum
Early 20th Century Dangle Earrings
Diamond, Gold, 18k Gold, Yellow Gold, Platinum
Antique 1890s Victorian Band Rings
Diamond, Pearl, 14k Gold, Yellow Gold
20th Century Unknown Engagement Rings
Diamond, Platinum
Vintage 1920s Art Deco Cluster Rings
Diamond, Gold, 18k Gold, White Gold
21st Century and Contemporary Unknown Arts and Crafts Engagement Rings
Diamond, Platinum
Vintage 1940s Unknown Band Rings
Diamond, Platinum
Antique 1850s English Victorian Pendant Necklaces
Diamond, 18k Gold, Yellow Gold, Enamel, Gold
Vintage 1950s Unknown Cocktail Rings
Diamond, Platinum
Early 20th Century Edwardian Engagement Rings
Diamond, Platinum
Vintage 1920s Art Deco Engagement Rings
Diamond, 18k Gold
20th Century Three-Stone Rings
Diamond, Platinum
Early 20th Century Edwardian Cluster Rings
Diamond, 14k Gold, Yellow Gold
Vintage 1930s Unknown Engagement Rings
Diamond, Platinum
Antique Early 1900s Unknown Victorian Three-Stone Rings
Diamond, 18k Gold
Antique Late 19th Century Victorian Brooches
Diamond, Pearl, Gold, Silver
Early 20th Century Dome Rings
Diamond, Gold, 18k Gold, White Gold
Vintage 1930s Art Deco Brooches
Diamond, Ruby, Platinum
20th Century Unknown Wedding Rings
Diamond, Platinum
Vintage 1920s Unknown Engagement Rings
Diamond, Platinum
Antique 19th Century French Belle Époque Pendant Necklaces
Pearl, Sapphire, Diamond, Gold, 18k Gold, White Gold, Yellow Gold
Vintage 1930s Art Deco Brooches
Diamond, Platinum
Vintage 1930s Unknown Cocktail Rings
Opal, Diamond, Black Opal, Platinum
Vintage 1920s Unknown Art Deco Solitaire Rings
Diamond, Platinum
Vintage 1920s French Cocktail Rings
Sapphire, Diamond, 18k Gold, White Gold
Vintage 1930s Art Deco Brooches
Diamond, Platinum
Vintage 1940s French Cocktail Rings
Diamond, Platinum
Vintage 1950s French Engagement Rings
Emerald, Diamond, Gold, White Gold, 18k Gold
Vintage 1920s Unknown Art Deco Engagement Rings
White Diamond, Platinum
Antique 19th Century Victorian Three-Stone Rings
Diamond, Yellow Gold
Antique 1890s Hungarian Victorian Engagement Rings
Diamond, Sapphire, Blue Sapphire, Gold, 14k Gold, Yellow Gold
20th Century Art Deco Cocktail Rings
Diamond, Sapphire, Platinum
Vintage 1910s Edwardian Brooches
Diamond, Ruby, Gold, 18k Gold, Yellow Gold, Silver, Sterling Silver
Vintage 1930s French Cluster Rings
Blue Sapphire, Sapphire, Diamond, 18k Gold, Yellow Gold
Vintage 1930s French Art Deco Cocktail Rings
Diamond, Platinum
Antique 1890s British Victorian Three-Stone Rings
Diamond, Gold, 18k Gold
Vintage 1920s Unknown Art Deco Wedding 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.