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Multi-colored gems are superimposed on an image of glacier peaks.

Article

Gems and Minerals from the Sub-Arctic

Sharon Bohannon, March 17, 2017

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

Article

Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

Russell Shor, February 1, 2016

G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.

Multicoloured Bismuth-bearing Tourmaline from Lundazi, Zambia

Mary L. Johnson, Cheryl Y. Wentzell, September 1, 1997

Tourmalines from an alluvial deposit near Lundazi in Zambia consist of colour-zoned pink/colourless/yellow-green “watermelon” nodules.

Abstracts; Summer 1991

Dona M. Dirlam

From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.

Pleochroism in Faceted Gems: An Introduction

Richard W. Hughes, October 31, 2014

Describes the phenomenon of pleochroism and its complex effect on the appearance of coloured stones.

Abstract Header from the 2009 issue of Gems & Gemology

Abstracts; Winter 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.

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