I personally own and enjoy all the books on this list and can recommend them. If you’re looking for books on your state that are not listed here you can likely find them by searching some of the series mentioned here.

Some of these books are older, out of print, and can be hard to find. I have included ISBN numbers when available to help you locate them in libraries and on eBay.

Even old and out of date books can have forgotten about gems of information in them.

I have included as many links as I can to the books on Amazon because I earn a small commission from qualifying purchases made after clicking one of my links, even if you ultimately choose another product. This costs you nothing, but the small commissions earned on referrals supports the ongoing creation of content on this site. Thank you for your support.

I love having rockhounding guide books in my personal library but they become outdated rather quickly sometimes. Areas that were once accessible can become off limits at anytime. It’s up to the individual to confirm an area is accessible.
Modern Rockhounding and Prospecting Handbook By Garret Romaine (2018)
ISBN 978-1-49303235-8
Earth Treasures The Northwest Quadrant Vol. 3 By Allan W Eckert (1987)
ISBN 0-06-096177-5
Northwest Treasure Hunter’s Gem and Mineral Guide 6th Edition By Kathy J. Rygle & Stephen F. Pederson (2016)
ISBN 978-0990415282
Western Gem Hunters Atlas 25th Edition By H. Cyril Johnson (1992)

British Columbia:
Gem Trails of British Columbia: 2nd Edition By Cam Bacon (2020)
ISBN 978-0888397249

Rockhounding Idaho By Garret Romaine (2020)
ISBN 978-1493034116
Gem Trails of Idaho & Western Montana By Lanny Ream (2012)
ISBN 978-1889786513

Gem Trails of Idaho & Western Montana By Lanny Ream (2012)
ISBN 978-1889786513
Rockhounding Montana By Montana Hodges (2015)
ISBN 978-0762781621
The Rockhound’s Guide to Montana By Robert Feldman (1985)
ISBN 0-934318-46-8

Gem Trails of Oregon By Garret Romaine (2008)
ISBN 978-1889786445
Rockhounding Oregon By Lars Johnson (2014)
ISBN 978-0762783663

Gem Trails of Utah By James Mitchell (2006)
ISBN 978-1889786377

Rockhounding Washington By Lars Johnson (2018)
ISBN 978-1493019090
Gem Trails of Washington By Garret Romaine (2014)
ISBN 978-1889786537
Gems and Minerals of Washington 3rd Edition By Lanny Ream (1994)
ISBN 0-918499-09-7

Roadside Geology of Oregon 2nd Edition By Marli B. Miller (2014)
ISBN 978-0878426317
Roadside Geology of Washington 2nd Edition By Marli B. Miller (2017)
ISBN 978-0878426775
Roadside Geology of Montana 2nd Edition By Donald W. Hyndman (2020)
ISBN 978-0878426966
Roadside Geology of Idaho 2nd Edition By Paul Link, Shawn Willsey, & Keegan Schmidt (2021)
ISBN 978-0878427024
On the Trail of the Ice Age Floods: A Geological Field Guide to the Mid-Columbia Basin By Bjornstad (2006)
ISBN 978-1879628274
On the Trail of the Ice Age Floods – Northern Reaches By Bjornstad (2012)
ISBN 978-1879628397
Washington’s Channeled Scablands Guide By John Soennichsen (2012)
ISBN 978-1594854835
Cataclysms on the Columbia: The Great Missoula Floods (2009)
ISBN 978-1932010312
Fire, Faults and Floods: A Road and Trail Guide Exploring the Origins of the Columbia River Basin By Marge & Ted Mueller (1997)
ISBN 978-0893012069
Washington Rocks!: A Guide to Geologic Sites in the Evergreen State By Kiver, Pritchard, & Orndorff (2016)
ISBN 978-0878426546
The Field Guide to Geology By David Lambert (2006)
ISBN 978-0816065103
Geology Underfoot in Western Washington By Dave Tucker (2015)
ISBN 978-0878426409
Geology Underfoot in Southern Idaho By Shawn Willsey (2017)
ISBN 978-0878426782

Rock and Mineral Collecting and Identifying
Rocks and Minerals: A Guide to Familiar Minerals, Gems, Ores and Rocks By Zim & Shaffer (1961)
ISBN 978-0307635020
Rocks & Minerals of Washington and Oregon By Lynch (2012)
ISBN 978-1591932932
National Audubon Society Field Guide to Rocks and Minerals: North America By NAS (1979)
ISBN 978-0394502694
A Field Guide to Rocks and Minerals By Peterson Field Guides (1998)
ISBN 978-0395910962
Smithsonian Handbooks: Rocks & Minerals (2002)
ISBN 978-0789491060
Collecting Agates and Jaspers of North America By Patti Polk (2013)
ISBN 978-1440237454
Collector’s Guide to the Zeolite Group (2014)
ISBN 978-0764346750