Basic Rockhounding and Prospecting: A Beginner's Guide

Rocks and Minerals (Speedy Study Guide)

Modern Rockhounding and Prospecting Handbook

Rocks and Minerals

The Wildlife-friendly Garden

Rocks, Gems, and Minerals of the Southwest

Fossils (Collins Gem)

Rockhounding Idaho: A Guide to 99 of the State’s Best Rockhounding Sites

Gemmology

Gold Panning the Pacific Northwest: A Guide to the Area’s Best Sites for Gold

Rockhounding Arizona: A Guide To 75 Of The State's Best Rockhounding Sites, Edition 2

The Practical Geologist: How to Apply Primitive Skills for Everyday Use

Beginner's Guide to Gemmology: Edition 2

Field Guide to Rocks & Minerals of Southern Africa

Gold Panning California: A Guide to the Area’s Best Sites for Gold

Dirt: The Ecstatic Skin of the Earth

Gold Panning Colorado: A Guide to the State's Best Sites for Gold

Handy Pocket Guide to Asian Gemstones

Blue: The Science and Secrets of Nature's Rarest Color

Ancient Gems and Finger Rings: Catalogue of the Collection