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Cinnabar
Cinnabar

Pyrope
Pyrope



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Cinnabar
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Pyrope

Cinnabar and Pyrope Optical Properties

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Optical Properties

Luster

Adamantine
Greasy, Vitreous

Pleochroism

-
None

Dispersion

0.060.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

2.905-3.251.720-1.756
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
cubic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Cinnabar and Pyrope Optic Character

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

Similar to their colors, Cinnabar and Pyrope 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.