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Sardonyx
Sardonyx

Vesuvianite
Vesuvianite



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Sardonyx
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Vesuvianite

Sardonyx and Vesuvianite Optical Properties

Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
slight in colored varieties

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.530-1.5431.703-1.752
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

0.008-0.0100.004-0.006
0 0.296
👆🏻

Clarity

Translucent
-

Sardonyx and Vesuvianite Optic Character

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

Sardonyx and Vesuvianite Transparency

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