Source: Tanzania
Mineral: Zoisite
Hardness: 6-7
Colour: Blue to bluish purple (post heat treatment) and green.
Treatments: Most Tanzanites are heat treated to transform the brown Zoisite into the blue colour with a permanent result.
Care and cleaning: Warm soapy water is the safest way of cleaning. Ultrasonic or steam should not be used.
Birthstone: December
Stone Properties: It is known for its healing and balancing energy and promote a strong sense of self control.
