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Ruby and Chrysoberyl Optical Properties


Chrysoberyl and Ruby Optical Properties


Optical Properties

Luster
Vitreous, Adamantine, Vitreous, Adamantine   
Vitreous   

Pleochroism
Strong: purplish-red   
X = red; Y = yellow-orange; Z = emerald-green   

Dispersion
0.02   
21
0.02   
24

Transparency
Transparent, Translucent, Transparent to opaque   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.762-1.778   
1.746-1.763   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
0.008   
0.007-0.013   

Clarity
Transparent   
Transparent   

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<< Physical Properties

Ruby and Chrysoberyl Optic Character

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

Similar to their colors, Ruby 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, Ruby is Translucent, Transparent and Transparent to opaque while Ruby is Translucent, Transparent and Transparent to opaque in appearance.

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