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Sylvite
Sylvite

Erythrite
Erythrite



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Sylvite
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Erythrite

Sylvite and Erythrite Optical Properties

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Optical Properties

Luster

Vitreous
Subadamantine, Pearly

Pleochroism

Visible in colored crystals
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

Dispersion

0.010.03
0.005 1
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Transparency

-
-

Refractive Index

1.49031.626-1.629
1 3.25
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Optic Character

-
-

Crystal System

Isometric
monoclinic

Birefringence

-9999-9999
0 0.296
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Clarity

-
-

Sylvite and Erythrite Optic Character

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

Similar to their colors, Sylvite and Erythrite 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.