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Taaffeite and Chrysoberyl Optical Properties


Chrysoberyl and Taaffeite Optical Properties


Optical Properties

Luster
Vitreous  
Vitreous  

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

Dispersion
0.02  
99+
0.02  
99+

Transparency
-  
Transparent, Translucent, Transparent to translucent  

Refractive Index
1.70-1.73  
1.746-1.763  

Optic Character
-  
Biaxial/+  

Crystal System
Hexagonal  
Orthorhombic  

Birefringence
0.055  
0.007-0.013  

Clarity
-  
Transparent  

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Taaffeite and Chrysoberyl Optic Character

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

Similar to their colors, Taaffeite 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, Taaffeite is while Taaffeite is in appearance.

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