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The Wittelsbach Blue

Rudolf Dröschel, Jürgen Evers, and Hans Ottomeyer, December 1, 2008

This article describes what is known about the Wittelsbach Blue since it was first reported in 1666, and the gemmological information released to date on this diamond.

Abstract Header from the 2009 issue of Gems & Gemology

Abstracts; Summer 2009

Brendan 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.

Emeralds of the Panjshir Valley, Afghanistan

Gary Bowersox, Lawrence W. Snee, March 1, 1991

With the withdrawal of Soviet troops from Afghanistan, villagers in the Panjshir Valley are turning their attention to the emerald riches of the nearby Hindu Kush Mountains.

Ruby and Sapphire Production and Distribution: A Quarter Century of Change

Russell Shor and Robert Weldon

During the past 25 years, the corundum market has been transformed from one of medium to high-priced gems to one that encompasses nearly all price ranges.

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