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Vesuvianite Idocrase
Vesuvianite Idocrase

Dravite
Dravite



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Vesuvianite Idocrase
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Dravite

Vesuvianite Idocrase and Dravite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Very strong: pale yellow colorless

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.700-1.7251.614-1.666
1 3.25
👆🏻

Optic Character

Uniaxial/-
-

Crystal System

-
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

0.002-0.0120.014-0.032
0 0.296
👆🏻

Clarity

Transparent
Transparent

Vesuvianite Idocrase and Dravite Optic Character

Vesuvianite Idocrase and Dravite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Vesuvianite Idocrase and Dravite 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 Idocrase and Dravite 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 Idocrase has Uniaxial/- character.

Vesuvianite Idocrase and Dravite Transparency

Similar to their colors, Vesuvianite Idocrase and Dravite 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 Idocrase is Transparent while Vesuvianite Idocrase is Transparent in appearance.