Tucson Visit Spurs Geology Professor and Publisher to Head Back to School
Geologist and publisher earns his GG so he can share more information on gem materials with visitors to Geology.com, his Earth Science website.
Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Governador Valadares District
A further article exploring tourmaline mines in another part of Minas Gerais.
Interesting Red Tourmaline from Zambia
A new source of red tourmaline is identified in Zambia.
Gem-Bearing Pegmatites: A Review
A survey of the current gemmological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline and topaz.
Abstracts; Summer 1991
From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Abstracts; Spring 1991
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.
Abstracts; Winter 2009
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.
Solution-Generated Pink Colour Surrounding Growth Tubes and Cracks in Blue to Blue-Green Copper-Bearing Tourmalines from Mozambique
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.