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Black Opal
Black Opal
☒

Covellite
Covellite
☒



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Black Opal
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Covellite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.01
Transparent, Translucent
1.370-1.470
-
-
-9999
Transparent
 
Resinous
Marked
0.08
OpaqueAnthony et al
1.45-2.62
-
Hexagonal
-9999
OpaqueAnthony et al

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