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Lazulite
Lazulite

Common Opal
Common Opal



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Lazulite
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Common Opal
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
0.01
Transparent, Translucent
1.604-1.646
-
monoclinic
0.031-0.036
Transparent
 
-
-
0.01
Translucent
1.37-1.52
-
-
-9999
Translucent