| Rock and Gem Field Guides | ||
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| Gem Trails of Washington
by Garret Romaine $13.45 | Gem Trails of Oregon
by Garret Romaine $13.45 | Gem Trails of Northern California
by James R. Mitchell $11.65 |
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| Gem Trails of Colorado
by James R Mitchell $11.65 | Gem Trails of Nevada
by James R. Mitchell $11.65 | Gem Trails of Utah
by James R. Mitchell $11.65 |
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| Gem Trails of New Mexico (Revised ed)
by James R. Mitchell $11.65 | Gem Trails of Pennsylvania and New Jersey
by Scott Stepanski $11.65 | Gem Trails of Southern California
by James R. Mitchell |
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