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Sylvite
Sylvite

Rosasite
Rosasite



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Sylvite
X
Rosasite

Sylvite and Rosasite Optical Properties

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Optical Properties

Luster

Vitreous
Silky, Vitreous

Pleochroism

Visible in colored crystals
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

Dispersion

0.010.03
0.005 1
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Transparency

-
-

Refractive Index

1.49031.672-1.688
1 3.25
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Optic Character

-
-

Crystal System

Isometric
monoclinic

Birefringence

-99990.139-0.143
0 0.296
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Clarity

-
-

Sylvite and Rosasite Optic Character

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

Sylvite and Rosasite Transparency

Similar to their colors, Sylvite 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, Sylvite is while Sylvite is in appearance.