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Why Diamonds are Valuable

Rarity: The rarity of a diamond makes it so valuable. Only a few survive the hazardous journey from the depths of the earth to reach the surface. In fact, some estimates suggest that as few as 350 tons have ever been mined in recorded history. Only fifty percent of the diamonds mined today are of gem quality. Even fewer are large enough to be cut into diamonds that can be worn as jewelry. Approximately 250 tons of ore must be mined and processed to produce a one-carat, gem quality polished diamond.

Older than Civilization: Diamonds are the oldest gems. Many were created over 3 billion years ago. Most diamonds are at least 100 million years old.

The hardest substance known to man: No other natural substance can match a diamond's hardness. Diamonds are 2,000 times harder than either rubies or sapphires and 3,000 times harder than synthetic cubic zirconium.

Complicated Beauty: Diamonds are the most difficult stone to mine. A three-carat diamond, for example, can cost up to seven times more than a one-carat diamond of equal color and clarity. Only one polished diamond in a thousand weighs over one carat.