Eight garnet species are defined and methods of identification are described.

An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.

The author reports on a sudden influx of natural fancy pink diamonds and their origins.

An overview of Australia's recent significance in the production of blue sapphire.

A history of pearls in jewelry and fashions through the ages.

The unusual effects of dispersion and twinning produced by a calcite gemstone.

The unique mineralogical and gemological character of gem-quality red beryl from Utah.

Unusual color-change garnets.

The American freshwater pearl industry and its new entry, the freshwater cultured pearl.

First in a series, this article reviews the exploration for gemstones and mining methods in Minas Gerais, Brazil.

A survey of the current gemological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline, and topaz.

Similarities between natural spinels — with intense blue color — and synthetic material, have led to difficulties in the recognition of the natural stones by traditional methods.

The properties of a novel gemological imitation, cobalt glass.

A review of the history of this area, its geology, and the mining methods that have predominated.

This article focuses on Colombian emeralds and gives a detailed explanation of the oiling process as observed by the author.

A report on the new synthetic ruby trade-named Ramaura.

The history of the Kashmir mines, the beautiful sapphires found there, and the outlook for the future.