Book of Donmon Teith

Beryl in its many color varieties is a favorite of both mineral collectors and gemologists. Superb examples are found at many locales worldwide, mainly in pegma

A guide to the identification, structure, and uses of precious and semi-precious stones, novelty stones, agates, and crystals.

With the tremendous growth of population in this and neighboring states, there are more collectors than ever before and with the rapidly escalating prices for m

Among rock-forming minerals, the zeolite group is large and widespread, and is enormously important to industry. Zeolites form excellent crystals. The group is

This book contains classic material dating back to the 1900s and before. The content has been carefully selected for its interest and relevance to a modern audi