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Sugilite
Sugilite

Anglesite
Anglesite



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Sugilite
X
Anglesite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Weak
0.02
Translucent
1.607-1.612
-
Hexagonal
0.003
Translucent
 
Adamantine
-
0.04
Transparent
1.877-1.894
-
Orthorhombic
0.017
Transparent