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Sylvite and Pargasite Optical Properties


Pargasite and Sylvite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Visible in colored crystals   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Transparent   

Refractive Index
1.4903   
1.613-1.663   

Optic Character
Not Available   
Not Available   

Crystal System
Isometric   
monoclinic   

Birefringence
Not Available   
0.020   

Clarity
Not Available   
Transparent   

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Sylvite and Pargasite Optic Character

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

Similar to their colors, Sylvite and Pargasite 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, Sylvite is Not Available while Sylvite is Not Available in appearance.

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