David Stanley Epstein, December 1, 1988
Brazil is currently the leader in overall production of amethyst.
Read MoreDona M. Dirlam
From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Read MoreDona M. Dirlam
This article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.
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