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Sugilite
Sugilite

Rutilated Quartz
Rutilated Quartz



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Sugilite
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Rutilated Quartz
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
 
Vitreous
-
0.01
Transparent, Translucent, Transparent to translucent
1.544-1.553
-
Hexagonal
0.009
Transparent