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Coral
Coral

Vesuvianite
Vesuvianite



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Coral
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Vesuvianite

Coral and Vesuvianite Optical Properties

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Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
slight in colored varieties

Dispersion

0.030.03
0.005 1
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Transparency

Translucent
-

Refractive Index

1.486-1.6581.703-1.752
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
tetragonal

Birefringence

0.160-0.1720.004-0.006
0 0.296
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Clarity

Translucent
-

Coral and Vesuvianite Optic Character

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

Coral and Vesuvianite Transparency

Similar to their colors, Coral 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, Coral is Translucent while Coral is Translucent in appearance.