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Sylvite
Sylvite

Anorthite
Anorthite



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Sylvite
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Anorthite

Sylvite and Anorthite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Visible in colored crystals
colorless.

Dispersion

0.010.01
0.005 1
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Transparency

-
Transparent

Refractive Index

1.49031.575-1.588
1 3.25
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Optic Character

-
-

Crystal System

Isometric
Triclinic

Birefringence

-99990.012-0.013
0 0.296
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Clarity

-
Transparent

Sylvite and Anorthite Optic Character

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

Similar to their colors, Sylvite and Anorthite 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.