Are Diamonds Just For Jewelry? No, 80% of diamonds is used for industrial applications. They are mainly used in cutting and grinding tools and as a conductive tool, as a drill or an abrasive. Most diamonds mined are not used for jewelry since most diamonds are naturally either far too small or too full of impurities for use as jewelry. Only one in a million diamonds weighs over a carat, and many larger diamonds are discolored by chemicals. So what are these other, less precious diamonds used for? Despite the fact that they are less beautiful than the rare, pure ...
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