Zoisite var. tanzanite, calcite, graphite (Ref: 4649)
Merelani Hills, Lelatema Mts, Manyara, Tanzania
40mm x 36mm x 34mm
Specimen of lustrous, gemmy crystals of tanzanite on calcite matrix. With some graphite. The biggest tanzanite crystal size is 3.2 x 1.0 cm. ;Tanzanite crystals show pleochroism (the color changes depending on the crystals optic axis - from one side it is greyish and from another it is violet or blue - in some crystals it is also possible to see a hint or red in 3rd axis). ;From: Spirifer Minerals
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See Also
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