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Vishnevite
Vishnevite

Vesuvianite
Vesuvianite



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Vishnevite
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Vesuvianite

Vishnevite and Vesuvianite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous, Resinous

Pleochroism

-
slight in colored varieties

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.490-1.5071.703-1.752
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
tetragonal

Birefringence

0.002-0.0120.004-0.006
0 0.296
👆🏻

Clarity

-
-

Vishnevite and Vesuvianite Optic Character

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

Vishnevite and Vesuvianite Transparency

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