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Ruby
Pyrope Spessartine
Pyrope Spessartine and Ruby Optical Properties


Optical Properties
Luster
Vitreous, Adamantine  
-  
Pleochroism
Strong: purplish-red  
-  
Dispersion
0.02  
99+
0.02  
99+
Transparency
Transparent, Translucent, Transparent to opaque  
-  
Refractive Index
1.762-1.778  
1.730-1.820  
Optic Character
-  
-  
Crystal System
Trigonal  
-  
Birefringence
0.008  
0.027  
Clarity
Transparent  
TransparentUlrich Henn and Claudio C. Milisenda  
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