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Dravite
Dravite

Scheelite
Scheelite



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Dravite
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Scheelite

Dravite and Scheelite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Adamantine

Pleochroism

Very strong: pale yellow colorless
Definite dichoric in yellow (yellow to orange-brown)

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Transparent
Translucent, Transparent

Refractive Index

1.614-1.6661.918-1.936
1 3.25
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Optic Character

-
-

Crystal System

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

Birefringence

0.014-0.0320.016
0 0.296
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Clarity

Transparent
Translucent

Dravite and Scheelite Optic Character

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

Similar to their colors, Dravite and Scheelite 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.