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Covellite
Covellite

Eosphorite
Eosphorite



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Covellite
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Eosphorite

Covellite and Eosphorite Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Resinous

Pleochroism

Marked
Visible: X = yellow; Y = pink; Z = pale pink to colorless

Dispersion

0.080.01
0.005 1
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Transparency

OpaqueAnthony et al
Transparent

Refractive Index

1.45-2.621.639-1.672
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

-99990.029-0.032
0 0.296
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Clarity

OpaqueAnthony et al
Transparent

Covellite and Eosphorite Optic Character

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

Similar to their colors, Covellite and Eosphorite 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.