Drawn illustration, not a photograph
Zoisite
Tanzanite
Violet-blue zoisite from a single small area of northern Tanzania. It shows different shades of blue and violet as it is turned.
- Mineral
- Zoisite
- Colour from
- Vanadium
- Hardness
- 6 to 7 on the Mohs scale
- Known sources
- Merelani Hills, Tanzania only
What to look for
- A deep, saturated violet-blue
- A clean face
- Heating is standard for almost all tanzanite
CareSofter and brittle. Avoid knocks, ultrasonic cleaners and sudden heat.
General guidance about the stone. Each actual stone is described individually, with its own photographs and any laboratory report, when you enquire.
Tanzanite, to wear.
Ask whether a ring, pendant, stud earrings or a bracelet with tanzanite is available, in gold, platinum or silver.