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Kyanite
Kyanite
☒

Piemontite
Piemontite
☒



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Kyanite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
Trichroic
0.02
-
1.71-1.74
-
Triclinic
-9999
-
 
Vitreous
visible
0.02
-
1.725-1.756
-
monoclinic
0.025-0.076
-

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Garnet
Emerald
Emerald
Aventurine
Aventurine

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