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Purple Fluorite Crystal Specimen Mexico by FenderMinerals / Mineral Friends ♥
Blue John (Blue John) fluorite fluorite is a world famous varieties, it has a zonal distribution of color, usually blue - purple belt and yellow - white - gray band relative interval. Blue John (Blue John) name confusing, in fact, it is derived from the French Blue jaune (blue and yellow). The fluorspar produced in English ( Castleton in Derbyshire, England ), although produced from the same hillside area, but belong to at least 14 veins, veins each have their own color and texture.