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Covellite
Covellite

Chiastolite
Chiastolite



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Covellite
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Chiastolite

Covellite and Chiastolite Optical Properties

Optical Properties

Luster

Resinous
-

Pleochroism

Marked
-

Dispersion

0.080.01
0.005 1
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Transparency

OpaqueAnthony et al
Translucent

Refractive Index

1.45-2.621.627-1.645
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
-

Birefringence

-99990.007-0.013
0 0.296
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Clarity

OpaqueAnthony et al
Translucent

Covellite and Chiastolite Optic Character

Covellite and Chiastolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Covellite and Chiastolite Physical Properties 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 Covellite and Chiastolite 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.

Covellite and Chiastolite Transparency

Similar to their colors, Covellite and Chiastolite 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, Covellite is OpaqueAnthony et al while Covellite is OpaqueAnthony et al in appearance.