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Tektite
Tektite

Sugilite
Sugilite



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Tektite
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Sugilite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.02
-
1.490-1.520
-
-
-9999
-
 
Vitreous
Weak
0.02
Translucent
1.607-1.612
-
Hexagonal
0.003
Translucent