Diamond’s Spectral Constellation

Discover the  ‘Diamond’s Spectral Constellation’.  Michael D. Cowing explains why the ‘Spectral Constellation’ is the ‘nexus’ connecting a diamond cut’s ...
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History and Utility of Gemstone Reflection Pattern Generation and Analysis

  A contribution to knowledge in the field of diamond and gem optics, faceting, and design. It is a contribution ...
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Describing Diamond Beauty and Light Performance

The full text of the article is available here.
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Objective Diamond Clarity Grading

The diamond clarity grading scale used worldwide today was introduced by the Gemological Institute of America (GIA) in 1953. To ...
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