Gem Trails of Washington the first comprehensive collecting guide of its kind for the Evergreen State. Features over 75 of the best locales for exploring and collecting rocks, minerals or fossils. Sites are presented with detailed directions, site maps, GPS readings, descriptive text and numerous black and white photos.

A handy mineral locator index, glossary, lists of rock clubs and a full-color photo insert of rock fossil and mineral specimens are included to enhance the collecting experience.