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Unformatted text preview: be separated • Alluvial mining is done on beaches and river beds • The water is held back and the miners dig down to the level of earth where diamonds are found, this sand is also brought to a screening plant Artificial Diamonds • Made in factories using over 3000º F and 1 million lbs. of pressure per square inch • They use graphite, which is the crystalline form of carbon • The end resulting diamonds are mostly used in machine and cutting tools and thermal conductors...
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This note was uploaded on 09/08/2010 for the course ANTH 115 at San Jose State.