Template:Kunzite
From The Gemology Project
Kunzite | |
---|---|
Chemical composition | LiAl(SiO3)2 Lithium aluminum silicate |
Crystal system | Monoclinic |
Habit | Prismatic |
Cleavage | Perfect, prismatic |
Fracture | Uneven |
Hardness | 7 |
Optic nature | Biaxial + |
Refractive index | 1.66-1.68 |
Birefringence | 0.015 |
Dispersion | Low, 0.017 |
Specific gravity | 3.18 |
Lustre | Vitreous |
Pleochroism | Strong |