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Euclase
Euclase

Vesuvianite
Vesuvianite



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Euclase
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Vesuvianite

Euclase and Vesuvianite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

Weak: colorless-(greenish) yellow
slight in colored varieties

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.650-1.6771.703-1.752
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
tetragonal

Birefringence

0.019-0.0250.004-0.006
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Euclase and Vesuvianite Optic Character

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

Euclase and Vesuvianite Transparency

Similar to their colors, Euclase 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, Euclase is while Euclase is in appearance.