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Inderite and Pyrophyllite Optical Properties


Pyrophyllite and Inderite Optical Properties


Optical Properties

Luster
Vitreous, Pearly, Greasy   
Pearly   

Pleochroism
Not Available   
NilArthur Thomas   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Translucent   

Refractive Index
1.488-1.505   
1.534-1.601   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a   
Not Available   

Birefringence
0.017   
0.050   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Translucent   

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Inderite and Pyrophyllite Optic Character

Inderite and Pyrophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Inderite and Pyrophyllite 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 Inderite and Pyrophyllite 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. Inderite has Biaxial/+ character.

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Inderite and Pyrophyllite Transparency

Similar to their colors, Inderite and Pyrophyllite 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, Inderite is Gemmological Tables (2004) while Inderite is Gemmological Tables (2004) in appearance.

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