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Grossular
Grossular

Spodumene
Spodumene



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Spodumene
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Greasy, Vitreous
None
0.02
-
1.730-1.760
-
cubic
0.020
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous
Strong in kunzite: α-purple
0.02
Transparent
1.657-1.681
-
monoclinic
0.014-0.018
-