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Covellite
Covellite

Garnet
Garnet



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Covellite
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Garnet

Covellite and Garnet Optical Properties

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Optical Properties

Luster

Resinous
Vitreous, Adamantine

Pleochroism

Marked
None

Dispersion

0.080.02
0.005 1
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Transparency

OpaqueAnthony et al
Transparent, Transparent to translucent

Refractive Index

1.45-2.621.730-1.895
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

-9999-9999
0 0.296
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Clarity

OpaqueAnthony et al
Transparent

Covellite and Garnet Optic Character

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

Similar to their colors, Covellite and Garnet 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.