Sten, mineral & fossil
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Rocks, Gems, and Minerals is a field guide to more than 100 of the most common and sought-after rocks, gems, and minerals hidden throughout North America. Conveniently sized to fit …
Rocks, Gems, and Minerals of the Rocky Mountains is a field guide to more than 130 of the most common and sought-after rocks, gems, and minerals hidden throughout the Rocky …
Rocks, Gems, and Minerals of the Southwest is a field guide to more than 100 of the most common and sought-after rocks, gems, and minerals hidden throughout the Southwest. …