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Dravite
Dravite

Verdite
Verdite



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Dravite
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Verdite

Dravite and Verdite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Silky

Pleochroism

Very strong: pale yellow colorless
Extreme

Dispersion

0.020.03
0.005 1
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Transparency

Transparent
Translucent

Refractive Index

1.614-1.6661.580
1 3.25
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Optic Character

-
-

Crystal System

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

Birefringence

0.014-0.032-9999
0 0.296
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Clarity

Transparent
Translucent

Dravite and Verdite Optic Character

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

Dravite and Verdite Transparency

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