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Chrysoberyl and Taaffeite Optical Properties


Taaffeite and Chrysoberyl Optical Properties


Optical Properties

Luster
Vitreous  
Vitreous  

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

Dispersion
0.02  
99+
0.02  
99+

Transparency
Transparent, Translucent, Transparent to translucent  
-  

Refractive Index
1.746-1.763  
1.70-1.73  

Optic Character
Biaxial/+  
-  

Crystal System
Orthorhombic  
Hexagonal  

Birefringence
0.007-0.013  
0.055  

Clarity
Transparent  
-  

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Chrysoberyl and Taaffeite Optic Character

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

Similar to their colors, Chrysoberyl and Taaffeite 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, Chrysoberyl is Transparent, Translucent and Transparent to translucent while Chrysoberyl is Transparent, Translucent and Transparent to translucent in appearance.

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