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Coral and Chrysoberyl Optical Properties


Chrysoberyl and Coral Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
AbsentWalter Schumann   
X = red; Y = yellow-orange; Z = emerald-green   

Dispersion
None   
0.02   
24

Transparency
Translucent   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.486-1.658   
1.746-1.763   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
0.160-0.172   
0.007-0.013   

Clarity
Translucent   
Transparent   

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Coral and Chrysoberyl Optic Character

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

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

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