This article, from the Winter 2006 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.

This article, from the Spring 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.

This article, from the Summer 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.

This article, from the Fall 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.

This article describes the major gem materials of Vietnam, together with their new finds and recent production.

In the last decade, progress in diamond growth by chemical vapor deposition (CVD) has resulted in significant improvement in the quality of synthetic single crystals.

Nail-head spicules are inclusions that have traditionally been associated with hydrothermal synthetic quartz and emerald.

This article describes a new type of synthetic fire opal marketed as “Mexifire.”

HPHT-treated type I diamonds of various colors may exhibit unusually intense fluorescence at the facet edges and junctions.

Exposure of some colorless to pale-hued African grossulars to either 60Co or 137Cs gamma rays turns them light yellow-green.

Gem-quality blue to bluish green sapphires from basaltic terrains in southern provinces of Vietnam have been entering the gemstone market since the late 1980s.

First in a series on the history of gemology which will appear periodically in Gems & Gemology.

Pakistan has begun to produce fine gem-quality pink topaz.

Comparing Sri Lankan scheelite with that found in Mexico and the U.S.

Red garnets have been mined in the Bohemian Hills of Czechoslovakia since the 16th century.

In January 2012, aquamarine crystals containing interesting inclusions were extracted from the Ambatofotsikely area northwest of Antsirabe, Madagascar.

A potential new synthetic gem material in the form of a faceted 0.88 ct brownish yellow nano-polycrystalline diamond (NPD) has undergone a full gemological examination, including detailed spectroscopic analysis, for the first time.

This article explores and identifies the changes that type IIa GE POL diamonds experience before and after HPHT annealing.