The lovely blue and purple gemstone is native to Tanzania.
But be careful with the gem, especially in rings, as the softness (6.5) means Tanzanite can be damaged more easily than some harder gems
Properties
- Crystal System - Orthorhombic
- Hardness - 6 to 7
- Specific Gravity - 3.35
- Refraction - Double
- Refractive Index - 1.757 to 1.779
- Dispersion -
- Birefringence -
- Wearability - Fair to Good
- Special Care - Avoid impact