Rock and Gem

Published in association with the Smithsonian Institution, this lavishly illustrated reference provides a close-up look at the world`s diverse rocks and gems, covering more than 450 different specimens, along with detailed descriptions, identification tips, classification information, and practical advice on gem and rock collecting. Reprint. 20, 000 first printing. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.