Ruby and Vishnevite Optical Properties

Ruby

Vishnevite

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

Vitreous, Adamantine

Strong: purplish-red

0.02

Transparent, Translucent, Transparent to opaque

1.762-1.778

Trigonal

0.008

Transparent

Vitreous, Pearly

0.01

1.490-1.507

Hexagonal

0.002-0.012

Ruby and Vishnevite Optic Character

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

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Ruby and Vishnevite Transparency

Similar to their colors, Ruby and Vishnevite 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, Ruby is Transparent, Translucent and Transparent to opaque while Ruby is Transparent, Translucent and Transparent to opaque in appearance.