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Gahnospinel and Pargasite Optical Properties


Pargasite and Gahnospinel Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
AbsentWalter Schumann   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Transparent   

Refractive Index
1.735-1.790   
1.613-1.663   

Optic Character
Not Available   
Not Available   

Crystal System
Isometric   
monoclinic   

Birefringence
Not Available   
0.020   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Gahnospinel and Pargasite Optic Character

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

Similar to their colors, Gahnospinel 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, Gahnospinel is Gemmological Tables (2004) while Gahnospinel is Gemmological Tables (2004) in appearance.

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