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Rubellite Tourmaline and Covellite Optical Properties


Covellite and Rubellite Tourmaline Optical Properties


Optical Properties

Luster
Not Available   
Resinous   

Pleochroism
Not Available   
Marked   

Dispersion
Not Available   
Not Available   

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

Refractive Index
Not Available   
1.45-2.62   

Optic Character
Not Available   
Not Available   

Crystal System
Isometric   
Hexagonal   

Birefringence
Not Available   
Not Available   

Clarity
Opaque   
OpaqueAnthony et al   

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Rubellite Tourmaline and Covellite Optic Character

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

Similar to their colors, Rubellite Tourmaline 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, Rubellite Tourmaline is Opaque while Rubellite Tourmaline is Opaque in appearance.

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