Must read. Insightful report on the causation of color in corundum by the researchers at Gemological Institute of America.
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-corundum-chromophores
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Showing posts with label Causes of Color in Corundum. Show all posts
Showing posts with label Causes of Color in Corundum. Show all posts
Saturday, July 25, 2020
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