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Muscovite
Muscovite

Alexandrite
Alexandrite



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Muscovite
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Alexandrite

Muscovite and Alexandrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Silky, Pearly
Vitreous
1.2 Pleochroism
Weak
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Transparent to nearly opaque
1.5 Refractive Index
1.552-1.6181.739-1.770
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
Not Available0.007-0.010
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Muscovite and Alexandrite Optic Character

Muscovite and Alexandrite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Muscovite and Alexandrite 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 Alexandrite 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. Alexandrite has Biaxial/+ character.

Muscovite and Alexandrite Transparency

Similar to their colors, Muscovite and Alexandrite 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.