Research Article Search Results
Quarterly Crystal: Unknown Inclusion in Triphane Spodumene
Bismuthinite Inclusions in Rose Quartz from Madagascar
Heat Treating Corundum: The Bangkok Operation
Radioactive Irradiated Spodumene
Gamma ray spectroscopy revealed that a packet of spodumene from Brazil was radioactive.
Tugtupite: A Gemstone from Greenland
Kashmir Sapphire
The history of the Kashmir mines, the beautiful sapphires found there, and the outlook for the future.
Gem-Bearing Pegmatites: A Review
A survey of the current gemological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline, and topaz.
Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Araçuaí Districts
First in a series, this article reviews the exploration for gemstones and mining methods in Minas Gerais, Brazil.
Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Governador Valadares District
An Examination of Four Important Gems
Several famous and historical gemstones in the Smithsonian's collection are examined and reported on.
