Tanzanite was first discovered in Tanzania, hence the name. Tanzanite is the most sought after variety of Zoicite

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Tanzanite was first discovered in Tanzania, hence the name. Tanzanite is the most sought after variety of Zoicite and is coloured by vanadium. Tanzanite crystals have distinct pleochroism - clearly seen in this image - showing either purple, blue or slate grey depending upon the angle they are viewed from. There might also be a slight colour change in incandescent light when stones may appear more violet. Tanazanite is an alternative birthstone for December. Weight: carats Origin: unknown Crystal structure: orthorhombic Composition: calcium aluminium hydroxysilicate Mohs hardness:

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Size: 3858px × 2572px
Location: United Kingdom
Photo credit: © Derek Anderson / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: aluminium, birthstone, blue, calcium, change, color, colour, crystal, december, gem, gemstone, grey, hydroxysilicate, incandescent, mineral, orthorhombic, pleochroic, pleochroism, purple, slate, tanzania, tanzanite, vanadium, violet, zoicite