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Vesuvianite
Vesuvianite

Cryolite
Cryolite



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Vesuvianite
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Cryolite

Vesuvianite and Cryolite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Greasy, Pearly

Pleochroism

slight in colored varieties
colorless.

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.703-1.7521.338-1.339
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
monoclinic

Birefringence

0.004-0.0060.001
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Vesuvianite and Cryolite Optic Character

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

Vesuvianite and Cryolite Transparency

Similar to their colors, Vesuvianite and Cryolite 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, Vesuvianite is while Vesuvianite is in appearance.