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Pyrophyllite and Rock Crystal Optical Properties


Rock Crystal and Pyrophyllite Optical Properties


Optical Properties

Luster
Pearly   
Not Available   

Pleochroism
NilArthur Thomas   
AbsentWalter Schumann   

Dispersion
Not Available   
0.01   
27

Transparency
Translucent   
TransparentWalter Schumann, Gemstones of the world (2001) More from other references   

Refractive Index
1.534-1.601   
1.544-1.553   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
0.050   
0.009   

Clarity
Translucent   
TransparentWalter Schumann   

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Pyrophyllite and Rock Crystal Optic Character

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

Similar to their colors, Pyrophyllite and Rock Crystal 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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