4 Carat Square Emerald Cut Diamond
2010s Unknown Contemporary Engagement Rings
Diamond, White Diamond, Platinum
21st Century and Contemporary Wedding Rings
Diamond, Platinum
2010s Unknown Contemporary Engagement Rings
Diamond, White Diamond, Emerald, Platinum
21st Century and Contemporary Engagement Rings
Diamond, Platinum
21st Century and Contemporary Engagement Rings
Diamond, Platinum
Vintage 1930s Art Deco Engagement Rings
Diamond, Platinum
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Emerald, Platinum
21st Century and Contemporary Art Deco Band Rings
Diamond, Emerald, 14k Gold, White Gold
2010s American Engagement Rings
Diamond, Platinum
21st Century and Contemporary American Contemporary Engagement Rings
Diamond, White Diamond, Emerald, 18k Gold, Yellow Gold, White Gold
2010s American Contemporary Engagement Rings
Diamond, Emerald, Platinum
2010s American Contemporary Engagement Rings
Diamond, White Diamond, Emerald, Platinum
21st Century and Contemporary Stud Earrings
Diamond, Emerald, 14k Gold, White Gold
21st Century and Contemporary American Modern Drop Necklaces
Diamond, White Diamond, 18k Gold, White Gold
21st Century and Contemporary Colombian Modern Cocktail Rings
Emerald, Diamond, Yellow Gold, Gold
21st Century and Contemporary Band Rings
Diamond, Emerald, Yellow Gold
Vintage 1920s Unknown Cocktail Rings
Diamond, Emerald, 14k Gold, White Gold, Gold
Vintage 1930s Unknown Cocktail Rings
Diamond, Emerald, Platinum
Vintage 1920s American Art Deco Engagement Rings
Emerald, White Diamond, Platinum
2010s American Contemporary Three-Stone Rings
Diamond, Emerald, 14k Gold
Late 20th Century Unknown More Jewelry
Diamond, Emerald, White Gold
21st Century and Contemporary Thai Art Deco Band Rings
Diamond, Emerald, Platinum
Antique Early 1900s Cocktail Rings
Diamond, Emerald, Platinum
21st Century and Contemporary Cocktail Rings
Diamond, Emerald, 18k Gold, White Gold, Yellow Gold
21st Century and Contemporary Unknown Contemporary Cocktail Rings
Tourmaline, Diamond, Yellow Gold, 14k Gold, Gold
21st Century and Contemporary Cocktail Rings
Diamond, Emerald, White Gold
21st Century and Contemporary Hoop Earrings
Diamond, Emerald, 14k Gold, White Gold, Yellow Gold
Vintage 1910s Unknown Pendant Necklaces
Diamond, Emerald, 18k Gold, Platinum
Vintage 1970s Engagement Rings
Diamond, Emerald, 18k Gold, White Gold
20th Century Australian Contemporary Wedding Rings
Emerald, White Diamond, Diamond, 18k Gold, Yellow Gold, Gold
21st Century and Contemporary Modern Cocktail Rings
Diamond, Emerald, Gold, 14k Gold, White Gold
Early 2000s British Modern Band Rings
Diamond, Emerald, Gold
Vintage 1950s Art Deco Cluster Rings
Emerald, 18k Gold
21st Century and Contemporary Thai Art Deco Three-Stone Rings
Diamond, Emerald, 14k Gold, White Gold
Early 2000s Clip-on Earrings
Diamond, Emerald, 18k Gold
Vintage 1920s Art Deco Brooches
Diamond, Emerald, Platinum
Vintage 1920s Cocktail Rings
Diamond, Emerald, Yellow Gold, Silver
20th Century Brooches
Diamond, Emerald, Platinum
Vintage 1920s British Engagement Rings
Diamond, Emerald, Gold, White Gold, Platinum
21st Century and Contemporary Australian Contemporary Cluster Rings
Diamond, Emerald, 18k Gold, White Gold
Vintage 1930s British Art Deco Wrist Watches
Diamond, Emerald, Platinum
Vintage 1970s Band Rings
Diamond, Emerald, Ruby, Sapphire, 18k Gold, Yellow Gold
21st Century and Contemporary Band Rings
Emerald, Ruby, Sapphire, 18k Gold, White Gold, Yellow Gold
Vintage 1980s Cocktail Rings
Diamond, Emerald, Ruby, 18k Gold
21st Century and Contemporary American Contemporary Cocktail Rings
Emerald, White Diamond, Diamond, Gold, White Gold, 14k Gold
Vintage 1920s Art Deco Engagement Rings
Diamond, Emerald, Platinum
21st Century and Contemporary North American Modern Cocktail Rings
Diamond, Emerald, Platinum
Early 20th Century British Art Deco Drop Necklaces
Diamond, Emerald, Platinum
Vintage 1920s Art Deco Cocktail Rings
Diamond, Emerald, Platinum
21st Century and Contemporary Pendant Necklaces
Diamond, Emerald, Gold, 14k Gold, White Gold
Vintage 1920s Art Deco Link Bracelets
Diamond, Emerald, Platinum
20th Century Unknown Contemporary Three-Stone Rings
Diamond, Peridot, Pink Sapphire, Gold, 14k Gold, White Gold
2010s Unknown Contemporary Engagement Rings
Diamond, White Diamond, Emerald, 18k Gold
Vintage 1930s Unknown Fashion Rings
Emerald, Yellow Gold
Vintage 1930s Art Deco Cocktail Rings
Diamond, Emerald, Platinum
Late 20th Century French Retro Cocktail Rings
Emerald, Gold, 18k Gold, Yellow Gold
21st Century and Contemporary Art Deco Drop Earrings
Diamond, Emerald, 14k Gold, White Gold
Late 20th Century Pendant Necklaces
Diamond, Emerald, 14k Gold, Yellow Gold
- 1
4 Carat Square Emerald Cut Diamond For Sale on 1stDibs
How Much is a 4 Carat Square Emerald 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.