This invaluable color guide was developed as an illustrated aid in finding, identifying, and making use of the Oregon gemstones. Accurate photos showing 60+ varieties of agate, jasper, opal, and related gems in the rough, as well as in the cut and polished state for identification purposes. . Useful to collectors, throughout Oregon: of the interior trails of central Oregon and eastern Oregon alike. Simple yet complete, perfect for children or adults, and sized to fit in your pocket! Softcover 15 pages.
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