Gem Pegmatites of Minas Gerais, Brazil: Exploration, Occurrence and Aquamarine Deposits
First in a series, this article reviews the exploration for gemstones and mining methods in Minas Gerais, Brazil.
Gem-Bearing Pegmatites: A Review
A survey of the current gemmological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline and topaz.
Topaz, Aquamarine and Other Beryls from Klein Spitzkoppe, Namibia
This article presents, for the first time, both gemmological and geologic information on topaz, aquamarine and other beryls from miarolitic pegmatites at Namibia’s historic Klein Spitzkoppe mineral locality.
Hydrothermally Grown Synthetic Aquamarine Manufactured in Novosibirsk, USSR
Physical, chemical, spectroscopic and microscopic characteristics of a sample of hydrothermally grown synthetic aquamarine from the USSR are presented.