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To know more
About
Tanzanite Gemstone
Found in just one place on earth, tanzanite is a relatively recent discovery. Tiffany & Co named this blue-violet variety of zoisite in honour of Tanzania, where it was first unearthed in 1967.
Facts
As the tanzanite show different colours depending on the viewing direction, cutters can fashion gems with a range of colour from violet blue to bluish violet depending on how much weight they want to retain from the rough.
Facts
Mineral: Zoisite
Chemistry: Ca2Al3Si3O12(OH)
Colour: Violet blue to bluish violet purple
Refractive index: 1.691 to 1.700
Birefringence: 0.00
8 to 0.013
Specific Gravity: 3.35
Mohs Hardness: 6 to 7
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