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Sylvite
Sylvite

Almandine
Almandine



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Sylvite
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Almandine

Sylvite and Almandine Optical Properties

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Optical Properties

Luster

Vitreous
Greasy, Vitreous

Pleochroism

Visible in colored crystals
None

Dispersion

0.010.03
0.005 1
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Transparency

-
-

Refractive Index

1.49031.770-1.820
1 3.25
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Optic Character

-
-

Crystal System

Isometric
cubic

Birefringence

-9999-9999
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Sylvite and Almandine Optic Character

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

Similar to their colors, Sylvite and Almandine 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.