Diamond’s Spectral Constellation
By ACA Gemological Laboratory |
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
By ACA Gemological Laboratory |
A contribution to knowledge in the field of diamond and gem optics, faceting, and design. It is a contribution ...
Read More Describing Diamond Beauty and Light Performance
By ACA Gemological Laboratory |
The full text of the article is available here.
Read More Objective Diamond Clarity Grading
By ACA Gemological Laboratory |
The diamond clarity grading scale used worldwide today was introduced by the Gemological Institute of America (GIA) in 1953. To ...
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