Rosita Jasper is an unclear and contaminated variety of silica. Vases, seals, and jewelry are made of heavily polished Rosita jasper, combining micro granular quartz and chalcedony. The Mohs Hardness Scale gives this kind of jasper a score of 6.5 to 7, and its specific gravity typically ranges from 2.5 to 2.9. Rosita Jasper has a refractive index of roughly 1.54.
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