Kunzite crystal structure
monoclinic

Kunzite

LiAlSi2O6:Mn

Quick Facts

Hardness
6.5
Specific Gravity
3.15
Refractive Index
1.66

Crystal Structure

monoclinic[2/m]:{110}@1.0 + {100}@0.8 + {010}@0.6 + {001}@1.2
monoclinic
2/m
{110} {100} {010} {001}

Physical Properties

Crystal Systemmonoclinic
Hardness (Mohs)6.5
Specific Gravity3.15
CleavagePerfect in two directions
FractureUneven to splintery
LustreVitreous

Optical Properties

Refractive Index1.66
Birefringence0.014-0.016
PleochroismStrong trichroic (pink, purplish-pink, colorless)
Dispersion0.017

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monoclinic[2/m]:{110}@1.0 + {100}@0.8 + {010}@0.6 + {001}@1.2