Square Black Diamond
2010s British Cufflinks
White Diamond, Black Diamond, 18k Gold
21st Century and Contemporary American Modernist Wrist Watches
18k Gold
2010s British Cuff Bracelets
Black Diamond, Rose Gold, 18k Gold
21st Century and Contemporary American Art Deco Wedding Rings
Diamond, White Diamond, Black Diamond, Gold, 18k Gold, White Gold
2010s Thai Contemporary Brooches
Diamond, Yellow Diamond, Black Diamond, Ruby, 18k Gold, White Gold
Vintage 1920s Art Deco Link Bracelets
Diamond, Onyx, Platinum
2010s Indian Victorian Cocktail Rings
Diamond, Black Diamond, Silver, 14k Gold, Yellow Gold
21st Century and Contemporary Swiss More Earrings
Diamond, Pearl, 18k Gold, White Gold
Vintage 1980s German Art Deco Clip-on Earrings
Gold Plate, Enamel
2010s Italian Wall Mirrors
Iron
20th Century Drop Earrings
Jade, Onyx, Ruby, 14k Gold, White Gold
2010s Fashion Rings
Black Diamond, 18k Gold
2010s Italian Modern Pendant Necklaces
Diamond, White Diamond, Black Diamond, 18k Gold, Rose Gold
2010s American Band Rings
Diamond, Black Diamond, Gold, 14k Gold, Yellow Gold
2010s American Contemporary Band Rings
Black Diamond, Sterling Silver
2010s Italian Stud Earrings
Black Diamond, 18k Gold
2010s American Contemporary Band Rings
Black Diamond, 14k Gold
2010s American Contemporary Band Rings
Black Diamond, 18k Gold
2010s American Contemporary Band Rings
Black Diamond, 18k Gold
2010s American Contemporary Band Rings
Black Diamond, 18k Gold
2010s American Contemporary Cuff Bracelets
Black Diamond, Gold Plate, Silver, Enamel
2010s Cocktail Rings
Diamond, Yellow Gold, Enamel
2010s American Contemporary Clip-on Earrings
White Diamond, Diamond, Platinum
2010s American Contemporary Cuff Bracelets
Black Diamond, Gold Plate, Silver, Enamel
2010s American Fashion Rings
Diamond, Onyx, 18k Gold
2010s Thai Art Deco Cufflinks
Diamond, White Gold, Enamel
21st Century and Contemporary Italian Contemporary Cuff Bracelets
Diamond, Sapphire, 18k Gold, White Gold, Titanium
21st Century and Contemporary Italian Contemporary Brooches
Diamond, Sapphire, Yellow Sapphire, 18k Gold, White Gold
21st Century and Contemporary Italian Contemporary Fashion Rings
Diamond, Sapphire, Yellow Sapphire, 18k Gold, White Gold
21st Century and Contemporary American Art Deco Drop Necklaces
Diamond, White Diamond, Onyx, Gold, 18k Gold, Yellow Gold
21st Century and Contemporary American Art Deco Drop Necklaces
Diamond, White Diamond, Onyx, Gold, 18k Gold, Yellow Gold
2010s Hong Kong Contemporary Band Rings
Diamond, Black Diamond, 18k Gold, Rose Gold, White Gold, Yellow Gold
2010s Contemporary Fashion Rings
Diamond, White Diamond, Black Diamond, Gold, 18k Gold, Yellow Gold
2010s Moroccan Dining Room Tables
Cement
2010s Cocktail Rings
Diamond, Yellow Gold
2010s Band Rings
Amethyst, Coral, Diamond, White Diamond, Blue Diamond, Yellow Diamond, B...
2010s American Contemporary Band Rings
Black Diamond, 14k Gold
21st Century and Contemporary Indian Contemporary Stud Earrings
Diamond, Black Diamond, Sterling Silver
21st Century and Contemporary Band Rings
Black Diamond, Gold, 18k Gold
2010s Turkish Modern Tennis Bracelets
Diamond, Black Diamond, 14k Gold
2010s American Contemporary Link Bracelets
White Diamond
21st Century and Contemporary Band Rings
Diamond, Platinum
21st Century and Contemporary Italian Flat Front Pants
21st Century and Contemporary American Modern Cocktail Rings
White Diamond, Black Diamond, White Gold
21st Century and Contemporary Modern Stud Earrings
White Diamond, Black Diamond, 18k Gold
21st Century and Contemporary Italian Contemporary Fashion Rings
Black Diamond, 18k Gold, White Gold
2010s Italian Scarves
Late 20th Century American Modern Cocktail Rings
Diamond, White Diamond, Onyx, Gold, 14k Gold, Yellow Gold
Antique 1880s American Quilts
Cotton
21st Century and Contemporary Band Rings
Coral, Diamond, Gold, 18k Gold, Yellow Gold
21st Century and Contemporary Italian Classical Roman Dangle Earrings
21st Century and Contemporary Pendant Necklaces
Pearl, White Gold
2010s Engagement Rings
Diamond, Ruby, Enamel
Early 20th Century American Adirondack Quilts and Blankets
Wool
2010s American Victorian Beaded Necklaces
Pearl, Black Pearl, White Diamond, 14k Gold, Gold-filled, Silver
21st Century and Contemporary Italian Solitaire Rings
White Diamond, Black Diamond, 18k Gold, Yellow Gold
21st Century and Contemporary Indian Modern Engagement Rings
Diamond, Emerald, 18k Gold, Enamel
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Square Black Diamond For Sale on 1stDibs
How Much is a Square Black 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.
- What is a square diamond?1 Answer1stDibs ExpertOctober 12, 2021A square diamond is sometimes known as a princess-cut diamond. Princess-cut diamonds have only been in their current form since the 1960s, making them a relatively new diamond shape. The beauty, flair, and edge of a square diamond are well-known. Shop a range of antique and vintage diamond jewelry on 1stDibs today.
- 1stDibs ExpertNovember 13, 2024What a square-cut diamond is called depends on how the jeweler arranged its facets. A princess-cut diamond has a square shape and a brilliant cut that maximizes its sparkle. Another square-shaped cut is the Asscher, which is stepped to show off a diamond's color and clarity. Find a large selection of diamond jewelry on 1stDibs.
Roman Malakov DiamondsMarch 24, 2021There are a few diamond cuts that can be considered square diamond rings. Here is a list: 1. Emerald cut 2. Asscher cut 3. Princess cut 4. Radiant.cut 5. Cushion cut- Is black diamond a real diamond?1 Answer1stDibs ExpertApril 5, 2022Yes, a black diamond is indeed a real diamond. There are three types of black diamonds; natural, Carbonado and treated black diamonds. Treated black diamonds are altered with high pressure and high heat to achieve the black color. Shop a collection of expertly vetted gems from some of the world’s top sellers on 1stDibs.
- 1stDibs ExpertFebruary 22, 2021Yes, a black diamond is a real diamond. Black diamonds have the same chemical composition as traditional colorless diamonds. Although black diamonds are rarer than colorless diamonds, they are less coveted and therefore cheaper.
- 1stDibs ExpertOctober 12, 2021Black diamonds are said to have a deep spiritual connotation and are frequently used to ward off evil. The gorgeous dark gemstone is thought to offer a link between the spiritual and physical worlds. Diamonds, in general, represent a deep emotional bond, which is why they are ideal for engagement rings. On 1stDibs, find a variety of black diamond jewelry and watches.
- 1stDibs ExpertAugust 26, 2024The difference between a black diamond and a black sapphire is that the two are different gemstones. A black diamond consists of carbon converted to a crystalline solid through changes driven by pressure and temperature. A black sapphire is a type of corundum, an aluminum oxide mineral. Generally, black diamonds are harder, rarer and more expensive than black sapphires. On 1stDibs, shop an assortment of black diamond and sapphire jewelry.
- 1stDibs ExpertSeptember 9, 2024Yes, black diamonds are generally worth something. The specific value of a genuine black diamond depends on its size, measured in carats, as well as its color, cut and clarity. If you own a black diamond or a piece set with one, a certified appraiser or knowledgeable jeweler can give you an idea of how much it may be worth. Shop a variety of black diamond jewelry on 1stDibs.
- 1stDibs ExpertFebruary 22, 2021White, or colorless, diamonds are generally the most valuable diamond variety. Black diamonds are certainly more rare than white ones, but the latter is generally more expensive.
- 1stDibs ExpertApril 5, 2022What black diamond rings symbolize is largely a matter of personal interpretation. Charisma, power, passion and self-assuredness are some of the characteristics commonly associated with black diamond jewelry. Shop a range of diamond gemstone rings from top sellers around the world on 1stDibs.
- 1stDibs ExpertFebruary 22, 2021Black diamonds can make good engagement rings because they symbolize authority, power and passion. They also can be less expensive than clear diamonds.
- 1stDibs ExpertNovember 1, 2023Black diamond engagement rings are popular for many couples. An antique, new or vintage black diamond engagement ring is an edgy, dramatic choice. Just keep in mind that with diamonds, it's all about sparkle, and the darkness of a black stone obscures its fire and brilliance. If the inky opacity of a black diamond seems a bit extreme and you'd like a little light to shine through, consider a gray diamond, which can be cut for maximum brilliance. Brides with a taste for the cool and unusual might also consider salt-and-pepper diamonds, which have white and black inclusions that produce a silvery gray, speckled look. Find black diamond engagement rings on 1stDibs.
- 1stDibs ExpertOctober 5, 2021What a 1-carat black diamond is worth varies according to the cut, type (natural/treated) and the demand and supply. Both natural and treated black diamonds increase in value as demand increases. It ranges from $100 to $3,000 per carat. On 1stDibs, you can find a variety of unique and designer black diamond jewelry watches from different periods to choose from.
- 1stDibs ExpertNovember 14, 2023To tell if black diamond earrings are real, first examine the surface of the gemstones. Real black diamonds usually have imperfections, while fakes usually appear flawless. Because it can be difficult to identify well-made synthetic gemstones with the naked eye, consider consulting a knowledgeable jeweler, dealer or appraiser for assistance with authentication. Find a variety of black diamond jewelry on 1stDibs.
- 1stDibs ExpertNovember 8, 2023Whether black diamond engagement rings are bad luck depends on a person's individual beliefs. In Italy, rubbing a black stone like a black diamond is considered good luck by some people. However, in India, black diamonds are a traditional symbol of bad luck. Find a variety of diamond engagement rings on 1stDibs.
- Which artist is known for the black-and-white optical illusion art called Movement in Squares?1 Answer1stDibs ExpertNovember 13, 2024The artist known for the black-and-white optical illusion art called Movement in Squares is Bridget Riley. Riley states that she draws inspiration for her spectacular abstractions expressed in paintings and prints largely from nature, which she defines as a “dynamism of visual forces — an event rather than an appearance.” The British artist produced her iconic piece, Movement in Squares, in 1961. Find a wide range of Bridget Riley art on 1stDibs.








