Cavansite Sterling Silver PendantAmong the most intensely blue minerals found in nature. Cavansitecalcium vanadium phyllosilicate, CaVSiO4HOgets its vivid color from vanadium(IV) in its crystal structure. It grows in the gas pockets of basaltic volcanic rock as prismatic crystals arranged in rosettes and spherical clusters, almost always alongside apophyllite and stilbite. Virtually all fine specimens originate from Pune district, Maharashtra, western India. Mohs 34. This piece is
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