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.
A Status Report on Gemstones from Afghanistan
An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.
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.
The authors have encountered hundreds of polymer-filled aquamarines in the Chinese jewellery market.
Aquamarine from the Masino-Bregaglia Massif, Central Alps, Italy
Aquamarine from granitic pegmatites of the Masino-Bregaglia Massif, Central Alps, Italy.
Aquamarine, Maxixe-Type Beryl and Hydrothermal Synthetic Blue Beryl: Analysis and Identification
Aquamarine, Maxixe-type (irradiated) beryl, and two types of hydrothermally grown synthetic blue beryl currently available in the marketplace were investigated using various gemmological methods.