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Montebrasite and Pyrophyllite Optical Properties


Pyrophyllite and Montebrasite Optical Properties


Optical Properties

Luster
Not Available   
Pearly   

Pleochroism
Not Available   
NilArthur Thomas   

Dispersion
Not Available   
Not Available   

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

Refractive Index
1.578-1.646   
1.534-1.601   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
0.020-0.030   
0.050   

Clarity
TransparentWalter Schumann   
Translucent   

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Montebrasite and Pyrophyllite Optic Character

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

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Montebrasite and Pyrophyllite Transparency

Similar to their colors, Montebrasite 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, Montebrasite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Montebrasite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.

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