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Piemontite
Piemontite
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Covellite
Covellite
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Piemontite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
visible
0.02
-
1.725-1.756
-
monoclinic
0.025-0.076
-
 
Resinous
Marked
0.08
OpaqueAnthony et al
1.45-2.62
-
Hexagonal
-9999
OpaqueAnthony et al

Compare Red Gemstones

Red Gemstones

Carnallite
Carnallite
Bornite
Bornite
Bastnasite
Bastnasite
Covellite
Nickeline
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Covellite
Polyhalite
Covellite Vs Polyhalite
Covellite
Vanadinite
Covellite Vs Vanadinite

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