Inclusion detection in polished gemstones

A method and apparatus for generating a 3D model of and/or detecting inclusions in a polished gemstone such as diamond is described. The gemstone (103) is rotated in a series of discrete increments. At each rotational position of the gemstone, the gemstone (103) is illuminated with collimated light...

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Hauptverfasser: POWELL GRAHAM RALPH, SMITH JAMES GORDON CHARTERS
Format: Patent
Sprache:eng
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