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Coral and Cassiterite Optical Properties


Cassiterite and Coral Optical Properties


Optical Properties

Luster
Not Available   
Adamantine, Greasy   

Pleochroism
AbsentWalter Schumann   
Pleochroic haloes have been observed. Dichroic in yellow   

Dispersion
None   
0.07   
6

Transparency
Translucent   
Transparent, Translucent   

Refractive Index
1.486-1.658   
1.990-2.105   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
tetragonal   

Birefringence
0.160-0.172   
0.096-0.098   

Clarity
Translucent   
Transparent   

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Coral and Cassiterite Optic Character

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

Similar to their colors, Coral 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, Coral is Translucent while Coral is Translucent in appearance.

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