Muscovite and Rosasite Optical Properties

Muscovite

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous, Silky, Pearly

Silky, Vitreous

1.2 Pleochroism

Weak

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Not Available

1.5 Refractive Index

1.552-1.6181.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

1.8 Birefringence

Not Available0.139-0.143

0 0.296

1.9 Clarity

Transparent

Not Available

Muscovite and Rosasite Optic Character

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

Similar to their colors, Muscovite and Rosasite 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.