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Cinnabar and Chrysoberyl Optical Properties


Chrysoberyl and Cinnabar Optical Properties


Optical Properties

Luster
Adamantine   
Vitreous   

Pleochroism
NilArthur Thomas   
X = red; Y = yellow-orange; Z = emerald-green   

Dispersion
Not Available   
0.02   
24

Transparency
Translucent   
Transparent, Translucent, Transparent to translucent   

Refractive Index
2.905-3.25   
1.746-1.763   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
Not Available   
0.007-0.013   

Clarity
Translucent   
Transparent   

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Cinnabar and Chrysoberyl Optic Character

Cinnabar and Chrysoberyl optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cinnabar and Chrysoberyl 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 Chrysoberyl 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. Chrysoberyl has Biaxial/+ character.

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Cinnabar and Chrysoberyl Transparency

Similar to their colors, Cinnabar and Chrysoberyl 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.

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Red Gemstones


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