Unearth a treasure trove of geological knowledge with this in-depth guide to over 500 rocks and minerals Learn how rocks are formed and how to recognize them by their unique qualities and colors. This is a wonderful book for beginners, students and rock collecting enthusiasts that includes the latest scientific research and specimen classification.

Examines the creation, importance, erosion, mining, and uses of rocks and minerals.--

Describes the seven basic shapes of crystals and other aspects of crystallography, including how they form in nature, their properties and identification, crystal color, and everyday uses for crystals.--

Este libro presenta con extraordinario realismo el interesante, y con frecuencia secreto, mundo de las piedras preciosa.

This book shows the great diversity and wealth of materials below the earth's surface - from fossil, to rocks and minerals, and crystals and gems.