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.
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)
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
Fluorescence produced by optical defects in diamond: measurement, characterisation and challenges
How variations in UV lamp output can affect observed fluorescence colour and intensity.
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.
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 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.
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.