Amvik eBook Solutions

Mica is a broad term encompassing about forty minerals, ranging from the common to the rare, many at times forming excellent crystals jewelers use. This book fe

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

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