It's not often that one has the opportunity to write about a gem that's found solely in the United States. But the occurrence of transparent feldspar along with native copper mineral deposits occurs only in Oregon. Feldspar crystals are fairly common in volcanic basalts all over the globe, but their quality is rarely high enough to be used in jewelry. What makes Oregonian sunstone even more rare is that Oregon is the only place where copper is found along with volcanic flows. When this copper is introduced into the feldspar crystals as tiny platelet inclusions, the result is Oregon sunstone. History and romance. Sunstone is mined in the "Oregon outback" in only two places, about 100 miles apart. The Ponderosa mine is located in the northern part of southeastern Oregon's Harney County. The Dust Devil mine is near Plush, centrally located in Oregon's south- central Lake County. Both depo

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