Recent decades have seen some modest successes. Starting in the 1950s, engineers managed to produce tiny crystals for industrial purposes - to coat saws, drill bits, and grinding wheels. But this summer, the first wave of gem-quality manufactured diamonds began to hit the market. They are grown in a warehouse in Florida by a roomful of Russian-designed machines spitting out 3-carat roughs 24 hours a day, seven days a week. A second company, in Boston, has perfected a completely different process for making near-flawless diamonds and plans to begin marketing them by years end. This sudden arrival of mass-produced gems threatens to alter the publics perception of diamonds - and to transform the $7 billion industry. More intriguing, it opens the door to the development of diamond-based semiconductors.
http://www.wired.com/wired/archive/11.09/diamond.html
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