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Emerald crystals from Colombia, Afghanistan, and Zambia

Photoluminescence Spectra of Emeralds from Colombia, Afghanistan and Zambia

D. Brian Thompson, Christian J. Bayens, Matthew B. Morgan, Taylor J. Myrick, and Nealey E. Sims, November 8, 2017

Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.

Agates from Sidi Rahal, in the Atlas Mountains of Morocco

Magdalena Dumanska-Słowik, Lucyna Natkaniec-Nowak, Aleksandra Wesełucha-Birczynska, Adam Gaweł, Marek Lankosz, and Paweł Wróbel
, October 22, 2013

A report on the chemical and mineralogical analysis of samples’ solid inclusions.

On the Identification of Various Emerald Filling Substances

Mary L. Johnson, Shane Elen, June 1, 1999

Criteria for distinguishing emerald filling substances were investigated.

Emeralds from the Ural Mountains, USSR

Karl Schmetzer, Heinz-Jürgen Bernhardt, June 1, 1991

Emeralds are again being mined in the historic district of the Ural Mountains. Physical, chemical, spectroscopic and microscopic characteristics of stones from the recent production are presented and compared with data on older samples as well as those reported in the literature.

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.

The Chemical Distinction of Natural from Synthetic Emeralds

Carol M. Stockton, September 1, 1984

Natural and synthetic emeralds are studied to identify the chemical differences between them.

Gemstones of Pakistan: Emerald, Ruby and Spinel

E. J. Gübelin, September 1, 1982

This article reports on three gem materials currently being mined in Pakistan.

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.

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