Vladimir S. Balitsky, Denis V. Balitsky, June 1, 2004
The proper use and limitations of IR spectroscopy for identifying natural versus synthetic amethyst of various types have been investigated, focusing on the region 3800–3000 cm-1.
Read MoreDona M. Dirlam
From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Read MoreKurt Nassau, March 1, 1981
A new and rather unusual gem material and possible treatments are discussed.
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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