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 Gemstones


Phosphosiderite
Creedite
Creedite and Phosphosiderite Optical Properties


Optical Properties
Luster
Vitreous  
Vitreous  
Pleochroism
Pale rose-red carmine-red colorlessAnthony et al  
-  
Dispersion
0.04  
36
0.02  
99+
Transparency
Transparent  
Transparent, Translucent  
Refractive Index
1.692-1.739  
1.461-1.485  
Optic Character
-  
-  
Crystal System
-  
monoclinic  
Birefringence
0.240  
0.024  
Clarity
Transparent  
Transparent  
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