System and method for gemstone cut grading
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United States of America Patent
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Jan 10, 2012
Grant Date -
Jan 14, 2010
app pub date -
Jun 30, 2009
filing date -
Sep 27, 2004
priority date (Note) -
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Abstract
A system for grading the cut of a diamond utilizes a number of appearance metrics to generate scores for a number of cut components that affect cut quality. These cut components include brightness, fire, scintillation, overweight, durability, polish, and symmetry. The cut grading system employs a cut grading algorithm that processes the individual scores obtained for the cut components to generate an overall cut grade for the diamond. The scoring methodology and the cut grading algorithm are designed to emulate actual observation grading such that the overall cut grade represents a fair indication of the cut quality of the diamond. In one practical embodiment, the cut grading system is fully automated and computer-implemented.
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