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Muscovite and Prehnite Optical Properties


Prehnite and Muscovite Optical Properties


Optical Properties

Luster
Vitreous, Silky, Pearly   
Vitreous   

Pleochroism
Weak   
AbsentWalter Schumann   

Dispersion
Not Available   
None   

Transparency
Transparent   
Translucent   

Refractive Index
1.552-1.618   
1.611-1.673   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
Not Available   
0.021-0.033   

Clarity
Transparent   
TranslucentHerve Nicolas Lazzarelli   

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Muscovite and Prehnite Optic Character

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

Similar to their colors, Muscovite and Prehnite 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, Muscovite is Transparent while Muscovite is Transparent in appearance.

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