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Pyrophyllite and Pearl Optical Properties


Pearl and Pyrophyllite Optical Properties


Optical Properties

Luster
Pearly   
Pearly   

Pleochroism
NilArthur Thomas   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Translucent   
Translucent, Opaque   

Refractive Index
1.534-1.601   
1.52-1.66   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.050   
0.156   

Clarity
Translucent   
Translucent   

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Pyrophyllite and Pearl Optic Character

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

Similar to their colors, Pyrophyllite and Pearl 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, Pyrophyllite is Translucent while Pyrophyllite is Translucent in appearance.

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