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This informative guide covers the five billion years of history that have given the earth its present form, including:

The earth's relation to the rest of the universe
The rocks and minerals of which it is made
The effects of glaciers, gravity, volcanoes, and other forces

Illustrated in full color, this guide is valuable for everyone interested in our planet, the ultimate basis of our present society.

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 specimens

Illustrated in full color throughout, "Rocks, Gems and Minerals" is a gem of a guide for rockhounds and mineral collectors