Amethyst from Boudi, Morocco
Fabrizio Troilo, Abdelghani El Harfi, Salahaddine Mouaddib, Erica Bittarello, and Emanuele Costa, April 30, 2015
An introduction to Moroccan amethyst, which features distinctive color zoning and inclusions.
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.