Apparatus and method for positively identifying synthetic silicon carbide gemstones
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United States of America Patent
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Sep 21, 1999
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N/A
app pub date -
Sep 29, 1997
filing date -
Sep 29, 1997
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Abstract
A target gemstone is irradiated with ultraviolet energy while sensing the electrical potential across the gemstone. A silicon carbide gemstone will generate an electrical potential and, therefore, can be positively identified, as distinct from other gemstones such as diamond and cubic zirconia that do not produce a potential.
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