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Sylvite
Sylvite

Rubellite
Rubellite



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Sylvite
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Rubellite

Sylvite and Rubellite Optical Properties

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Optical Properties

Luster

Vitreous
-

Pleochroism

Visible in colored crystals
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
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Transparency

-
Transparent, Translucent

Refractive Index

1.49031.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

Isometric
-

Birefringence

-99990.014-0.040
0 0.296
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Clarity

-
Transparent

Sylvite and Rubellite Optic Character

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

Similar to their colors, Sylvite and Rubellite 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.