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Willemite
Willemite

Vesuvianite
Vesuvianite



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Willemite
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Vesuvianite

Willemite and Vesuvianite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Resinous

Pleochroism

-
slight in colored varieties

Dispersion

0.170.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.687-1.7231.703-1.752
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
tetragonal

Birefringence

0.028-0.0300.004-0.006
0 0.296
👆🏻

Clarity

Transparent
-

Willemite and Vesuvianite Optic Character

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

Willemite and Vesuvianite Transparency

Similar to their colors, Willemite 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, Willemite is Transparent and Translucent while Willemite is Transparent and Translucent in appearance.