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Jade
Jade

Dravite
Dravite



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Jade
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Dravite

Jade and Dravite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Very strong: pale yellow colorless

Dispersion

0.010.02
0.005 1
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Transparency

Translucent, Translucent to opaque
Transparent

Refractive Index

1.600-1.6881.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

0.020-0.0270.014-0.032
0 0.296
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Clarity

Translucent
Transparent

Jade and Dravite Optic Character

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

Jade and Dravite Transparency

Similar to their colors, Jade 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, Jade is Translucent and Translucent to opaque while Jade is Translucent and Translucent to opaque in appearance.