Today in Science History – First Man Made Diamonds

Today in Science History – First Man Made Diamonds

February 16, 1953, diamond crystals, the size of grains of sand, were produced in Sweden in a high pressure press by subjecting graphite to 83,000 atmospheres pressure and about 2000°C for an hour. The research, headed by Erik Lundblad, was funded by the Swedish electrical company ASEA. The idea was conceived by refrigerator inventor, Baltzar von Platen. The press used six pyramidal anvils, set spherically around a graphite pellet. Despite one success, the equipment was unreliable and dangerous. ASEA decided not to publish the results to keep the experiment a commercial secret. Less than a year later, 16 Dec 1954, General Electric in the U.S. also produced man-made diamonds, which is recognized as the first process that was reproducible. Read more on how diamonds are made…. http://www.livescience.com/32266-how-are-diamonds-made.html

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