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TITLE: Diamonds

[Photo: Diamonds]

Diamonds, like soot, are made of carbon. In a diamond, the carbon atoms are tightly linked to form the hardest material known. In fact, the word diamond comes from the Greek word adamas, which means "invincible." Add diamond's fiery brilliance to this extreme hardness and you have a magnificent gem—the April birthstone. Colorless diamonds are few and far between, and valuable as a result. Most diamonds are naturally tinted pale yellow or brown. Fancy diamonds—those with deep colors such as yellow, blue, pink, and red—are very rare and highly prized. It is estimated that such fancy colors occur in only one in every 100,000 diamonds.

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