Jaime Kautsky, March 1, 2019
Geologist and publisher earns his GG so he can share more information on gem materials with visitors to Geology.com, his Earth Science website.
Read MoreJohn I. Koivula, Kevin Nagle, Andy Hsi-Tien Shen, and Philip Owens
Several transparent, faceted, blue to blue-green copper-bearing tourmalines containing growth tubes and cracks surrounded by sleeves of pink colour were examined for this report.
Read MoreDona M. Dirlam
From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Read MoreJames E. Shigley and Anthony R. Kamp, June 1, 1984
A survey of the current gemmological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline and topaz.
Read MoreBrendan M. Laurs, Thomas W. Overton
This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read MoreDona M. Dirlam
This article, from the Spring 1991 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read MoreJohn I. Koivula and C. W. Fryer, March 1, 1985
A new source of red tourmaline is identified in Zambia.
Read MoreKeith Proctor, June 1, 1985
A further article exploring tourmaline mines in another part of Minas Gerais.
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