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Vishnevite and Cassiterite Optical Properties


Cassiterite and Vishnevite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Adamantine, Greasy   

Pleochroism
Not Available   
Pleochroic haloes have been observed. Dichroic in yellow   

Dispersion
Not Available   
0.07   
6

Transparency
Not Available   
Transparent, Translucent   

Refractive Index
1.490-1.507   
1.990-2.105   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
tetragonal   

Birefringence
0.002-0.012   
0.096-0.098   

Clarity
Not Available   
Transparent   

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Vishnevite and Cassiterite Optic Character

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

Similar to their colors, Vishnevite and Cassiterite 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, Vishnevite is Not Available while Vishnevite is Not Available in appearance.

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