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Cinnabar
Cinnabar

Scheelite
Scheelite



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Cinnabar
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Scheelite

Cinnabar and Scheelite Optical Properties

Optical Properties

Luster

Adamantine
Vitreous, Adamantine

Pleochroism

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

Dispersion

0.060.04
0.005 1
👆🏻

Transparency

Translucent
Translucent, Transparent

Refractive Index

2.905-3.251.918-1.936
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
tetragonal

Birefringence

-99990.016
0 0.296
👆🏻

Clarity

Translucent
Translucent

Cinnabar and Scheelite Optic Character

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

Cinnabar and Scheelite Transparency

Similar to their colors, Cinnabar 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, Cinnabar is Translucent while Cinnabar is Translucent in appearance.