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BRILLIANT CUT

In a new study of the mechanics of diamond polishing, researchers found that a liquidlike carbon layer (green atoms) forms at the interface of the gem (grey, bottom) and the sharp polishing grit particles (grey, upper left). Grit particles scrape this layer, exposing carbon chains (brown) that react with oxygen (red) and are carried off as carbon dioxide, leaving behind a smoother surface. Credit: Fraunhofer Institute for Mechanics of Materials IWM

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  • Sounds like a O2 rich gas flow directed at the head of the stone might allow for a faster cut.Interesting enhancement.
    From a faceter and a chemical engineer.
    John  Adams John Adams
    Dec. 2, 2010 at 5:58pm
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