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Lepidocrocite
Lepidocrocite

Cinnabar
Cinnabar



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X
Lepidocrocite
X
Cinnabar

Lepidocrocite and Cinnabar Optical Properties

Optical Properties

Luster

-
Adamantine

Pleochroism

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

Dispersion

0.020.06
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.9402.905-3.25
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
Translucent

Lepidocrocite and Cinnabar Optic Character

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

Lepidocrocite and Cinnabar Transparency

Similar to their colors, Lepidocrocite and Cinnabar 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, Lepidocrocite is while Lepidocrocite is in appearance.