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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. 

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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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