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Aquamarine from a New Primary Deposit in Mexico

Mikhail Ostrooumov, November 7, 2016

Examination of aquamarine samples from a new primary deposit in San Luis Potosí, northern Mexico.

Mexican Demantoid from New Deposits

Mikhail Ostrooumov, February 1, 2016

Skarn deposits in the Veracruz state of Mexico yield new demantoid material.

Thai-Myanmar Petrified Woods

Seriwat Saminpanya, November 23, 2015

The properties of petrified woods originating from various localities in Thailand and Myanmar are examined.

First Discovery of Topazolite in Mexico

Mikhail Ostrooumov, October 31, 2014

Reports on the first discovery of fine topazolite garnet crystals in Mexico.

Natural Pipi Pearls from Tahiti

Olivier Segura, Emmanuel Fritsch, and Djamel Touati, April 30, 2014

An overview of natural "pipi" pearls from French Polynesia.

Indian Ruby Mining

Pooja Shirole, Aditi Mookherjee, Tanuuja Marathe, and Muhammad F. Makki, April 30, 2014

An overview of ruby mining in the southern Indian states of Tamil Nadu and Karnataka.

Gem-Quality Cr-Rich Kyanite from India

Thierry Pradat and Gagan Choudhary, April 30, 2014

India is emerging as a source of gem-quality kyanite.

Ancient Tourmaline and Beryl from Afghanistan

Jaroslav Hyršl, Prague, Czech Republic, July 2, 2013

Examination of a large private collection of beads and carvings from antique excavations, assembled in the 1970s by a collector in Afghanistan.

G&G Gem News

Mary L. Johnson, John I. Koivula, Dino DeGhionno and Shane McClure, Emmanuel Fritsch, Henry A. Hanni, Karl Schmetzer

This is where G&G's Gem News is found.