An examination of the two types of sugilite found at the Wessels mine in South Africa.

A treatise on the design, display, care and repair of fine gemstones.

A study of iridescent orthoamphiboles marketed as Nuummite.

A review of mid-20th century jewelry styles.

The techniques of this precision inlay style are explained.

This article discusses the origins of Art Nouveau and outlines the distinctive interpretations and contributions made by significant Art Nouveau jewelers.

Sumitomo Electric Industries is producing gem-quality synthetic yellow diamonds in deep yellow single crystals in sizes up to 2 ct.

This section, from the Fall 1986 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.

An important clue in identifying natural-colored corundum is the presence of carbon dioxide fluid inclusions.

Where there are no inclusions or color zoning, the presence of Brazil twinning in the natural amethyst will usually make the distinction.

This section, from the Summer 1986 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.

Several famous and historical gemstones in the Smithsonian's collection are examined and reported on.

The Elahera gem field currently provides approximately 35% of the gemstones exported from Sri Lanka.

The Coscuez mine, one of a number in Colombia, is rapidly gaining significance as a major source of fine emeralds.

Chinese master carvers have produced some of the world's most sophisticated gemstone carvings.

China has identified many deposits with significant potential to produce gemstones; various species are discussed.

Several pearl-in-chicken cleaning experiments are carried out to test the validity of recipes from an ancient Egyptian source.

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.