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Chrysoprase
Emerald
Emerald and Chrysoprase Optical Properties


Optical Properties
Luster
Vitreous, Waxy  
Vitreous  
Pleochroism
-  
Strong dichroism: yellow green Lazzarelli  
Dispersion
0.01  
99+
0.01  
99+
Transparency
Translucent, Opaque, Translucent to nearly opaque  
Transparent, Translucent, Transparent to translucent  
Refractive Index
1.530-1.543  
1.565-1.602  
Optic Character
-  
-  
Crystal System
Trigonal  
Hexagonal  
Birefringence
0.004  
0.0040-0.0070  
Clarity
Translucent  
-  
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