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Witherite and Covellite Optical Properties


Covellite and Witherite Optical Properties


Optical Properties

Luster
Vitreous   
Resinous   

Pleochroism
NilArthur Thomas   
Marked   

Dispersion
Not Available   
Not Available   

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

Refractive Index
1.529-1.680   
1.45-2.62   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Hexagonal   

Birefringence
0.148   
Not Available   

Clarity
Transparent   
OpaqueAnthony et al   

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Witherite and Covellite Optic Character

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

Similar to their colors, Witherite 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, Witherite is Translucent and Transparent while Witherite is Translucent and Transparent in appearance.

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