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Jadeite
Jadeite

Covellite
Covellite



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Jadeite
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Covellite

Jadeite and Covellite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Pearly
-
0.01
Translucent
1.652-1.688
-
monoclinic
0.013-0.020
Translucent
 
Resinous
Marked
0.08
OpaqueAnthony et al
1.45-2.62
-
Hexagonal
-9999
OpaqueAnthony et al

Jadeite and Covellite Optic Character

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

Jadeite and Covellite Transparency

Similar to their colors, Jadeite 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, Jadeite is while Jadeite is in appearance.