4 Carat Square Emerald Cut Diamond
Late 20th Century British Dome Rings
Diamond, Emerald, 18k Gold
21st Century and Contemporary Pendant Necklaces
Diamond, Emerald, Ruby, 18k Gold, White Gold
21st Century and Contemporary American Modern Drop Earrings
Diamond, Emerald, Gold, 14k Gold, White Gold
Vintage 1950s Cocktail Rings
Diamond, Emerald, Sapphire, Platinum
Vintage 1980s Engagement Rings
Diamond, Emerald, Gold, 18k Gold, Yellow Gold
Vintage 1930s American Art Deco Dangle Earrings
Diamond, White Diamond, Emerald, Onyx, Platinum
21st Century and Contemporary European Revival Cocktail Rings
Diamond, Emerald, Onyx, Platinum
2010s Asian Loose Gemstones
Diamond
21st Century and Contemporary Unknown Contemporary Band Rings
Blue Sapphire, Sapphire, Emerald, White Diamond, Diamond, Platinum
21st Century and Contemporary Art Deco Link Bracelets
Diamond, Emerald, Onyx, 14k Gold, White Gold
Late 20th Century Unknown Modern Band Rings
Diamond, Emerald, Gold, 18k Gold, White Gold
21st Century and Contemporary American Art Deco Wedding Rings
Diamond, Emerald, Gold, 18k Gold, White Gold
21st Century and Contemporary Art Deco Pendant Necklaces
Diamond, Emerald, 14k Gold, White Gold
21st Century and Contemporary Art Deco Cluster Rings
Diamond, Emerald, 14k Gold, White Gold
Vintage 1930s Art Deco Engagement Rings
Diamond, Emerald, Platinum
20th Century Indian Art Deco Cocktail Rings
Diamond, Emerald, South Sea Pearl, Yellow Gold, 14k Gold
2010s Asian Loose Gemstones
Diamond
21st Century and Contemporary Drop Earrings
Diamond, Emerald, Ruby, Sapphire, 18k Gold
21st Century and Contemporary Art Deco Engagement Rings
Diamond, Emerald, 14k Gold, White Gold, Yellow Gold
21st Century and Contemporary Zambian Cocktail Rings
Diamond, Emerald, Gold, 14k Gold, White Gold
21st Century and Contemporary Art Deco Engagement Rings
Diamond, Emerald, 14k Gold, White Gold
2010s Asian Loose Gemstones
Diamond
2010s Asian Loose Gemstones
Diamond
2010s Asian Loose Gemstones
Diamond
21st Century and Contemporary Art Deco Engagement Rings
Diamond, Emerald, Opal, 14k Gold, Yellow Gold
21st Century and Contemporary Greek Byzantine Band Rings
Diamond, White Diamond, Blue Diamond, Emerald, Ruby, Gold, 18k Gold, Yel...
2010s Asian Loose Gemstones
Diamond
2010s Asian Loose Gemstones
Diamond
Mid-20th Century American More Bracelets
Diamond, 18k Gold
21st Century and Contemporary Hong Kong Contemporary Cocktail Rings
Diamond, White Diamond, Emerald, Gold, 14k Gold, White Gold
21st Century and Contemporary Hong Kong Contemporary Cocktail Rings
Diamond, White Diamond, Emerald, Gold, 14k Gold, White Gold
21st Century and Contemporary Hong Kong Contemporary Cocktail Rings
Diamond, White Diamond, Emerald, Gold, 14k Gold, White Gold
21st Century and Contemporary Thai Art Deco Engagement Rings
Diamond, Emerald, Gold, 18k Gold, White Gold, Yellow Gold
21st Century and Contemporary North American Artisan Drop Earrings
Aquamarine, Diamond, Gold, 18k Gold, White Gold
21st Century and Contemporary Thai Art Deco Stud Earrings
Diamond, Emerald, 9k Gold, White Gold
2010s Asian Loose Gemstones
Diamond
Vintage 1970s Swiss Modernist Cocktail Rings
White Diamond, Emerald, Diamond, 18k Gold, White Gold, Gold
Vintage 1920s European Art Deco Vanity Items
Diamond, Emerald, 18k Gold, Yellow Gold
Antique Early 1900s British Edwardian Three-Stone Rings
Diamond, Sapphire, 18k Gold, Gold
2010s Asian Loose Gemstones
Diamond
21st Century and Contemporary Greek Byzantine Band Rings
Emerald, Multi-gemstone, Ruby, Diamond, White Diamond, Blue Diamond, Yel...
2010s American Modern Tennis Bracelets
Diamond, Platinum
2010s Italian Modern Engagement Rings
Diamond, White Diamond, Emerald, 14k Gold, White Gold
Early 2000s British Cluster Rings
Diamond, Sapphire, Gold, 18k Gold, White Gold
1990s French Engagement Rings
Diamond, Platinum
Vintage 1960s Cocktail Rings
Diamond, Gold
Vintage 1970s Cocktail Rings
Aquamarine, Diamond, Gold, 14k Gold, White Gold
Vintage 1960s Italian Modernist Cocktail Rings
Diamond, Emerald, Ruby, White Diamond, Gold, White Gold, 18k Gold
21st Century and Contemporary Contemporary Choker Necklaces
Diamond, Blue Sapphire, 18k Gold, White Gold
Vintage 1930s Unknown Retro Cluster Rings
Diamond, Sapphire, Platinum
2010s American Modern Fashion Rings
Sapphire, 14k Gold, Rose Gold, White Gold, Yellow Gold, Platinum
21st Century and Contemporary Thai Edwardian Solitaire Rings
Diamond, Topaz, Blue Topaz, 9k Gold, Yellow Gold
Vintage 1940s Unknown Retro Brooches
Aquamarine, Diamond, Ruby, 14k Gold, Rose Gold
21st Century and Contemporary Art Deco Cocktail Rings
Aquamarine, Diamond, Onyx, 14k Gold, White Gold
21st Century and Contemporary Thai Art Deco Engagement Rings
Sapphire, Diamond, Aquamarine, White Gold, 14k Gold
21st Century and Contemporary Unknown Contemporary Band Rings
Tourmaline, White Diamond, Diamond, Yellow Gold, 14k Gold, Gold
Vintage 1940s Retro Solitaire Rings
Diamond, Sapphire, 14k Gold, White Gold
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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.