Fluorescence produced by optical defects in diamond: measurement, characterisation and challenges
How variations in UV lamp output can affect observed fluorescence colour and intensity.
Summer 2015 G&G: Dual-Stars, Photomicrography Guide, Rubies from Tajikistan, New Micro-World Section
G&G Brief presents an overview of the content of the Summer 2015 issue of Gems & Gemology.
The “Type” Classification System of Diamonds and Its Importance in Gemmology
Knowledge of type allows gemmologists to better evaluate if a diamond might be treated or synthetic, and whether it should be sent to a laboratory for testing.
Book Review: Handbook of Spectral Lines in Diamond, Volume 1: Tables and Interpretations
By Bernhard Dischler, 467 pp., publ. by Springer-Verlag Berlin and Heidelberg GmbH & Co., Berlin; New York, 2012, US $120
Colour Grading of Coloured Diamonds in the GIA Gem Trade Laboratory
How GIA’s Gem Trade Laboratory grades coloured diamonds, including an expanded colour grading terminology, is explained.
Abstracts; Autumn 2009
This article, from the Autumn 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.
Abstracts; Autumn 1991
This article, from the Autumn 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.
Book Review: From a Snowflake to an Iceberg: The McFerrin Collection
By Dorothy McFerrin, publ. by the McFerrin Foundation, College Station, Texas, 2013, US $125 (£74)