Rocks, Gems and Minerals: A Fully Illustrated, Authoritative and Easy-to-Use Guide (A Golden Guide from St. Martin's Press)

Rockhounding for Beginners: Your Comprehensive Guide to Finding and Collecting Precious Minerals, Gems, Geodes, & More

Introduction to Mineralogy

Secrets of the Gem Trade: The Connoisseur's Guide to Precious Gemstones

Rocks & Minerals (DK Handbooks)

Mining Engineering Analysis, Second Edition

Gemstones (DK Smithsonian Handbook)

Love Is in the Earth - Mineralogical Pictorial: Treasures of the Earth

Geology: A Folding Pocket Guide to Familiar Rocks, Minerals, Gemstones & Fossils (Nature Observation North America)

Gem: The Definitive Visual Guide