Kunzite

From The Gemology Project
Revision as of 22:54, 13 September 2006 by Africanuck (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
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