Gemstones found in Oregon are: Agate, Obsidian, Hydrolite, and Sunstone.
Southern Oregon Vacation Guide has a nice collectors map.
State Gemstone: Sunstone
Sunstone was adopted as Oregon's State Gemstone in 1987. Sunstone is a feldspar. Reflective inclusions or red, orange, or green platy crystals give Sunstone its metallic glitter.
State Rock: Thunderegg
Thunderegg was adopted as Oregon's State Rock in 1965.
Useful Books & Bibliography:
- Gem Trails of Oregon - by James R. Mitchell
Gem Trails is very accurate with easy to follow maps and many colorful pictures that help to enhance the experience.
- Roadside Geology of Oregon (Roadside Geology Series) - by David D. Alt, Donald W. Hyndman
Oregon Geology book. There are no better books for roadside geologizing than the Roadside Geology series.
- Field Collecting Gemstones and Minerals - by John Sinkankas
Probably the best general description written for the layperson about how, where, and why gem and mineral deposits form.
- The Curious Lore of Precious Stones - by George Frederick Kunz
The definitive book on fascinating, traditional gem lore. Very practical.
- Gemstone Buying Guide: A Guide to Buying - by Renee Newman
Very nice gemstone identification book.
- Simon and Schuster's Guide to Gems and Precious Stones - by C. Ciprianai, Kennie Lyman (Editor), Alessando Borelli
This book is one inch thick and every facing page has a full colored photo of gems or precious stones. Hardness, weights, cuts, refractions, and value of color are given for each gem.
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