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Carnallite
Carnallite

Scheelite
Scheelite



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Carnallite
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Scheelite

Carnallite and Scheelite Optical Properties

Optical Properties

Luster

Greasy
Vitreous, Adamantine

Pleochroism

-
Definite dichoric in yellow (yellow to orange-brown)

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

-
Translucent, Transparent

Refractive Index

1.4671.918-1.936
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.02700.016
0 0.296
👆🏻

Clarity

-
Translucent

Carnallite and Scheelite Optic Character

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

Carnallite and Scheelite Transparency

Similar to their colors, Carnallite 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, Carnallite is while Carnallite is in appearance.