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| Photo : © Malte Sickinger |
Sensationelle Matrixstufe
Tanzanite is the blue and violet variety of the mineral zoisite, caused by small amounts of vanadium. Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area near the Mererani Hills.
Formula: Ca₂Al₃(SiO₄)₃(OH)
System: Orthorhombic
Colour: purple, ...
Lustre: Vitreous
Hardness: 6 – 7
