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Polyhalite and Torbanite Optical Properties


Torbanite and Polyhalite Optical Properties


Optical Properties

Luster
Vitreous, Resinous   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Not Available   

Refractive Index
1.546-1.548   
Not Available   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Not Available   

Birefringence
0.021   
Not Available   

Clarity
Not Available   
Not Available   

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Polyhalite and Torbanite Optic Character

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

Similar to their colors, Polyhalite and Torbanite 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, Polyhalite is Not Available while Polyhalite is Not Available in appearance.

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Red Gemstones


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