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Liddicoatite
Liddicoatite

Covellite
Covellite



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Liddicoatite
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Covellite

Liddicoatite and Covellite Optical Properties

Optical Properties

Luster

Vitreous
Resinous

Pleochroism

Strong: dark brown light brownAnthony et al
Marked

Dispersion

0.010.08
0.005 1
👆🏻

Transparency

Transparent
OpaqueAnthony et al

Refractive Index

-99991.45-2.62
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
OpaqueAnthony et al

Liddicoatite and Covellite Optic Character

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

Liddicoatite and Covellite Transparency

Similar to their colors, Liddicoatite 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, Liddicoatite is Transparent while Liddicoatite is Transparent in appearance.