Rocks, Gems and Minerals

This eBook is best viewed on a color device.This handy identification guide to the most common kinds of rocks and minerals offers concise and fascinating information on:- Physical and chemical properties- Origins and geologic significance- Gems and semiprecious stones- How to find and collect specimensIllustrated in full color throughout, Rocks, Gems and Minerals is a gem of a guide for rockhounds and mineral collectors!