Diamond is crystallized carbon, the only gem composed of a single element. The most popular diamonds are traditionally colorless, but they can also be found in yellow and brown colors. Although much rarer, diamonds known as “fancies” also come in blue, red, pink, green, orange, black, lavender and purple. On Mohs’ scale of hardness, diamond is the world’s hardest substance at 10. It has a high luster and primary sources include South Africa, Namibia, Australia, Botswana, Russia, Zaire, Brazil, Ghana, Angola, Central African Republic and Canada.
Color
The most popular diamonds are traditionally colorless, but they can also be found in yellow and brown colors. Although much rarer, diamonds known as “fancies” also come in blue, red, pink, green, orange and black.
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