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Vesuvianite
Vesuvianite

Friedelite
Friedelite



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Vesuvianite
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Friedelite

Vesuvianite and Friedelite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
-

Pleochroism

slight in colored varieties
-

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.703-1.7521.627-1.663
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m

Birefringence

0.004-0.0060.032-0.035
0 0.296
👆🏻

Clarity

-
Translucent

Vesuvianite and Friedelite Optic Character

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

Vesuvianite and Friedelite Transparency

Similar to their colors, Vesuvianite and Friedelite 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, Vesuvianite is while Vesuvianite is in appearance.