Refractive index: 1.65-1.7 Hardness: 7 (Mohs scale) Dispersion (effects of light): 0.015 Wax casting: Yes Melting Point: 1700 °C
Notice: The color of the photo may be different from the actual due to different computer monitors and other devices. This stone is imitation of tanzanite, it is bluish purple color, without inclusion.
