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Kyanite Cyprine
Kyanite Cyprine
☒

Taaffeite
Taaffeite
☒



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Kyanite Cyprine
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Taaffeite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Blue stones strong trichroism: colorless/pale blue (greenish or violet)-blue dark blueHerve Nicolas Lazzarelli
0.02
Transparent
1.710-1.735
Biaxial/+
-
0.012-0.033
Transparent
 
Vitreous
Weak
0.02
-
1.70-1.73
-
Hexagonal
0.055
-

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