Helvite, Quartz (Var: Smoky Quartz), Feldspar Group

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A lustrous, partially gemmy, zoned golden-yellow helvite crystal set on feldspar matrix with glassy smoky quartz crystals from recent finds at the Tongbei area of China. The 9 mm x 9 mm, sharp tetragonal crystal has interesting beveled edges. A rich sprinkling of tiny muscovites are a very nice accent. Helvite is a rare manganese, beryllium silicate and this is a very fine combination specimen from this well-known locale, known more for its super spessartine garnets.