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Cacoxenite
Cacoxenite

Covellite
Covellite



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Cacoxenite
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Covellite

Cacoxenite and Covellite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Silky
visible: O = Pale yellow E = Canary yellow to yellow orange
0.03
-
1.575-1.585
-
Hexagonal
-9999
-
 
Resinous
Marked
0.08
OpaqueAnthony et al
1.45-2.62
-
Hexagonal
-9999
OpaqueAnthony et al

Cacoxenite and Covellite Optic Character

Cacoxenite and Covellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cacoxenite Vs Covellite like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Cacoxenite and Covellite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Cacoxenite and Covellite Transparency

Similar to their colors, Cacoxenite and Covellite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Cacoxenite is while Cacoxenite is in appearance.