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Helenite
Helenite
☒

Rock Crystal
Rock Crystal
☒



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Helenite
X
Rock Crystal
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.04
-
-9999
-
-
-9999
-
 
-
-
0.01
TransparentWalter Schumann
1.544-1.553
-
-
0.009
TransparentWalter Schumann

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Richterite
Flint
Flint
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