25 Carat Princess Cut Diamond
21st Century and Contemporary Unknown Pendant Necklaces
Diamond, 14k Gold, White Gold
21st Century and Contemporary American Modern Three-Stone Rings
Diamond, Sapphire, 14k Gold, White Gold
21st Century and Contemporary Italian Contemporary Three-Stone Rings
Diamond, White Diamond, Yellow Diamond, Gold, 18k Gold, White Gold, Yell...
20th Century Unknown Engagement Rings
Diamond, Platinum
Early 2000s Pendant Necklaces
Diamond, White Gold
2010s American Hoop Earrings
Diamond, 14k Gold, White Gold
20th Century Unknown Solitaire Rings
Diamond, 14k Gold, White Gold, Platinum
20th Century Unknown Engagement Rings
Diamond, 14k Gold, White Gold
2010s American Drop Necklaces
Diamond, Platinum
21st Century and Contemporary Unknown Engagement Rings
Diamond, 14k Gold
21st Century and Contemporary Japanese Modern Engagement Rings
Diamond, Sapphire, Blue Sapphire, Platinum
21st Century and Contemporary Japanese Modern Engagement Rings
Diamond, Sapphire, Blue Sapphire, Platinum
21st Century and Contemporary Indian Modern Engagement Rings
White Diamond, Diamond, Sterling Silver, Rhodium
2010s Tennis Bracelets
Diamond, Ruby, Gold, 18k Gold
2010s American Contemporary Dangle Earrings
White Diamond, Rubelite, 18k Gold, White Gold
21st Century and Contemporary Indian Modern Fashion Rings
White Diamond, Diamond, Sterling Silver, Rhodium
21st Century and Contemporary Indian Modern Fashion Rings
White Diamond, Diamond, Sterling Silver, Rhodium
21st Century and Contemporary Indian Modern Fashion Rings
Diamond, Rhodium, Sterling Silver
20th Century Unknown Solitaire Rings
Diamond, 14k Gold, Yellow Gold, Platinum
20th Century More Rings
Diamond, Yellow Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, Yellow Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, White Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, White Gold
21st Century and Contemporary Engagement Rings
Diamond, 18k Gold, White Gold
Antique 19th Century Unknown More Jewelry
White Gold
21st Century and Contemporary Indian Modern Fashion Rings
White Diamond, Diamond, White Gold, 14k Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, Yellow Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, White Gold
21st Century and Contemporary Engagement Rings
Diamond, 14k Gold, White Gold
21st Century and Contemporary Engagement Rings
Diamond, 10k Gold, White Gold, Yellow Gold
21st Century and Contemporary American Modern Choker Necklaces
Diamond, White Gold
21st Century and Contemporary Engagement Rings
Diamond, Yellow Diamond, 18k Gold, White Gold
21st Century and Contemporary Engagement Rings
Diamond, Sapphire, 14k Gold, White Gold
21st Century and Contemporary Unknown Modern More Bracelets
Diamond, 18k Gold, White Gold
20th Century Unknown Three-Stone Rings
Diamond, 18k Gold, White Gold
2010s American Contemporary Engagement Rings
Diamond, Platinum
20th Century Unknown Engagement Rings
Diamond, 18k Gold, White Gold
21st Century and Contemporary Unknown Modern Modern Bracelets
Diamond, Ruby, 18k Gold, White Gold
21st Century and Contemporary Japanese Modern Cluster Rings
Diamond, Ruby, Platinum
21st Century and Contemporary Stud Earrings
Diamond, Gold, 18k Gold, Rose Gold
2010s British Modern Cluster Rings
Diamond, White Diamond, White Gold, 18k Gold
20th Century Unknown Cocktail Rings
Diamond, Yellow Sapphire, 14k Gold, White Gold, Yellow Gold
21st Century and Contemporary Pendant Necklaces
Diamond, 14k Gold
20th Century Clip-on Earrings
Diamond, 18k Gold, Yellow Gold
21st Century and Contemporary Indian Modern Engagement Rings
White Diamond, Diamond, Sterling Silver, Rhodium
21st Century and Contemporary Fashion Rings
Diamond, Sapphire, 14k Gold, Yellow Gold
Vintage 1980s American Bangles
Diamond, Sapphire, Gold, 14k Gold
Late 20th Century Bangles
White Diamond, Emerald, 18k Gold, Yellow Gold
21st Century and Contemporary Band Rings
Diamond, White Gold
2010s American Stud Earrings
Diamond, White Diamond, 18k Gold, White Gold
20th Century More Rings
Diamond, Yellow Gold
2010s Stud Earrings
Diamond, 14k Gold, Yellow Gold
2010s American Arts and Crafts Pendant Necklaces
Diamond, Opal, 18k Gold, Yellow Gold
21st Century and Contemporary Japanese Modern Cluster Rings
Diamond, Sapphire, Blue Sapphire, 18k Gold, White Gold
2010s American Contemporary Chain Necklaces
Diamond, Gold, 18k Gold
Late 20th Century More Rings
Diamond, White Gold
Vintage 1920s Dutch Art Deco Band Rings
Diamond, 14k Gold, Gold, White Gold
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25 Carat Princess Cut Diamond For Sale on 1stDibs
How Much is a 25 Carat Princess 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 ExpertSeptember 28, 2021Like with most diamond products, the price of a 1-carat princess cut diamond can range dramatically. On 1stDibs, find 1-carat princess cut diamond rings, earrings, necklaces and bracelets starting at $999 to $16,500.
- 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.