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Chrysoberyl and Verdite Optical Properties


Verdite and Chrysoberyl Optical Properties


Optical Properties

Luster
Vitreous  
Vitreous, Silky  

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

Dispersion
0.02  
99+
0.03  
99+

Transparency
Transparent, Translucent, Transparent to translucent  
Translucent  

Refractive Index
1.746-1.763  
1.580  

Optic Character
Biaxial/+  
-  

Crystal System
Orthorhombic  
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c  

Birefringence
0.007-0.013  
-9999  

Clarity
Transparent  
Translucent  

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Chrysoberyl and Verdite Optic Character

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

Similar to their colors, Chrysoberyl and Verdite 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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