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Cinnabar
Cinnabar

Lepidocrocite
Lepidocrocite



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X
Cinnabar
X
Lepidocrocite

Cinnabar and Lepidocrocite Optical Properties

Optical Properties

Luster

Adamantine
-

Pleochroism

-
Strong; X = colorless to yellow; Y = orange

Dispersion

0.060.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

2.905-3.251.940
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Translucent
-

Cinnabar and Lepidocrocite Optic Character

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

Similar to their colors, Cinnabar and Lepidocrocite 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.