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Beryl
Beryl

Augite
Augite



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Beryl
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Augite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Resinous
Weak to distinct
0.01
Transparent, Transparent to opaque
1.560-1.604
-
Hexagonal
0.0040-0.0070
Transparent
 
Vitreous, Resinous
Pale green
0.02
Transparent, Translucent
1.671-1.774
-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
-9999
Transparent