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Labradorite
Labradorite
☒

Apatite
Apatite
☒



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Labradorite
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Apatite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
-
0.01
Transparent, Translucent, Transparent to translucent
1.554-1.573
-
Triclinic
0.008-0.010
Transparent
 
Vitreous
Blue stones – strong
0.01
-
1.628-1.651
-
Hexagonal
0.002-0.008
TransparentUlrich Henn and Claudio C. Milisenda