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Cryolite and Muscovite Optical Properties


Muscovite and Cryolite Optical Properties


Optical Properties

Luster
Vitreous, Greasy, Pearly   
Vitreous, Silky, Pearly   

Pleochroism
colorless.   
Weak   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Transparent   

Refractive Index
1.338-1.339   
1.552-1.618   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
monoclinic   

Birefringence
0.001   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Cryolite and Muscovite Optic Character

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

Similar to their colors, Cryolite and Muscovite 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, Cryolite is Gemmological Tables (2004) More from other references while Cryolite is Gemmological Tables (2004) More from other references in appearance.

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