Sharon Bohannon, November 11, 2016
Learn how the structure, inclusions and properties of some gemstones interact with light to create unusual visual effects.
Read MoreRussell Shor, February 1, 2016
G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.
Read MoreBrendan M. Laurs, Thomas W. Overton
This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read MoreD. Vincent Manson and Carol M. Stockton, December 1, 1984
Unusual colour-change garnets.
Read MoreCarol M. Stockton, June 1, 1982
The gemmological properties and chemical compositions of two unusual colour-change garnets are reviewed.
Read MoreTedd Payne, September 1, 1981
Mines in San Benito County, California, produce andradite in various colours; some are chatoyant.
Read MoreCarol M. Stockton and D. Vincent Manson, December 1, 1985
Eight garnet species are defined and methods of identification are described.
Read MoreYou are being redirected to GIA Alumni Association, LLC.