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Vishnevite
Vishnevite

Benitoite
Benitoite



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Vishnevite
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Benitoite

Vishnevite and Benitoite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
O = colorless; E = purple

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.490-1.5071.757-1.804
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.002-0.0120.047
0 0.296
👆🏻

Clarity

-
Transparent

Vishnevite and Benitoite Optic Character

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

Similar to their colors, Vishnevite and Benitoite 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.