Diamond

Diamond is an extraordinary mineral with extreme hardness and inherent beauty that is sought for personal adornment and industrial use. Because the genesis of this unique mineral requires extreme temperature and pressure, natural diamond is so rare that some diamonds are the most valuable commodity on earth, based on weight.

Natural diamond has been discovered in 35 countries. Some diamonds have been found in the United States. Colorado, for instance, has produced a small number of diamonds.

The following countries produce industrial grade diamonds: Australia, Botswana, Brazil, China, Congo, Russia and South Africa.

Geologically speaking, natural diamonds are found in two environments. Most are found in kimberlites, which are pipe-like formations created as a result of volcanic and tectonic activity.

The second geological source for diamonds is placer deposits. The diamonds are easily weathered out of their kimberlite host rock and are washed away by streams and rivers. When these streams slow down, the diamonds are deposited in the stream sands in what are called placer deposits.

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