Introduction to Mineralogy

by William D. Nesse

An Introduction to the Rock-Forming Minerals

by W.A. Deer

Design Sourcebook

by David Watkins

Earth Materials

by Cornelis Klein

The Elements

by Philip Ball

Volcanism

by Hans-Ulrich Schmincke

Mineralogy (for Amatures)

by John Sinkankas

Hands down, the best book for everyone interested in the subject of minerals, crystals and gems. Lays out the basics of understand for the science and the physical crystals and locality information.

Manual of Mineral Sciences

by Cornelis Klein

Mineralogy

by Dexter Perkins

Jewelry Making

by Jinks McGrath

Ore Geology and Industrial Minerals: An Introduction

by Anthony M. Evans

Dictionary of Geology & Mineralogy

Ancient Forests

by Frank J. Daniels

Pegmatites

by David London