About Tanzanite

Why we love this gem:

Tanzanite is found in only one place on Earth, Tanzania, Africa and is estimated to be 1,000 times rarer than diamond. Geologists believe the only known source may be depleted within our lifetime, making it truly the gemstone of this generation. Its exceptional rarity and demand led to its addition as an official December birthstone in 2002, the first new birthstone added since 1912.

Caring for this gem:

With a hardness of 6.5-7, this gemstone is heat-treated to enhance and stabilise its colour. It requires no special care and should be cleaned with warm soapy water; avoid ultrasonic and steam cleaning.

The basics:

Tanzanite belongs to the zoisite mineral family, has an orthorhombic crystal system, and a chemical composition of calcium aluminium silicate (СazAlz(SiO4)з(ОH)). Its specific gravity ranges from 3.1 to 3.4

Colour:

Ranges from blue and violet to pinkish purple, with rarer variations including green, yellow, or pink.

Optical properties:

Tanzanite has a vitreous lustre, a refractive index of 1.69-1.70, and is transparent.

View our exclusive Tanzanite range at: Shop Tanzanite Now