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.
A Status Report on Gemstones from Afghanistan
An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.
Aquamarine from the Masino-Bregaglia Massif, Central Alps, Italy
Aquamarine from granitic pegmatites of the Masino-Bregaglia Massif, Central Alps, Italy.