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Jadeite and Covellite Optical Properties


Covellite and Jadeite Optical Properties


Optical Properties

Luster
Pearly   
Resinous   

Pleochroism
NilArthur Thomas   
Marked   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references   

Refractive Index
1.652-1.688   
1.45-2.62   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Hexagonal   

Birefringence
0.013-0.020   
Not Available   

Clarity
Translucent   
OpaqueAnthony et al   

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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 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 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.

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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 Translucent while Jadeite is Translucent in appearance.

Red Gemstones

Red Gemstones


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