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 Gemstones


Topaz
Opal
Opal and Topaz Optical Properties


Optical Properties
Luster
Vitreous  
Vitreous, Pearly  
Pleochroism
Weak  
None  
Dispersion
0.01  
99+
0.01  
99+
Transparency
Transparent  
Transparent, Translucent, Transparent to translucent  
Refractive Index
1.606-1.644  
1.37-1.52  
Optic Character
-  
-  
Crystal System
Orthorhombic  
Trigonal  
Birefringence
0.008-0.011  
-9999  
Clarity
TransparentUlrich Henn and Claudio C. Milisenda  
Transparent  
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Compare Gems for Sagittarius

Gems for Sagittarius

Gems for Sagittarius

Compare Gems for Sagittarius

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