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Jet
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Sapphire
Sapphire
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Waxy
-
0.01
-
1.640-1.680
-
-
-9999
-
 
Vitreous, Adamantine
Strong
0.02
Transparent, Translucent, Transparent to opaque
1.762-1.788
-
Trigonal
0.008-0.009
Transparent

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Organic » More

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Bloodstone Heliotrope
Bloodstone Heliotrope
Black Opal
Black Opal
Binghamite
Binghamite

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Sapphire
Abalone
Sapphire Vs Abalone
Sapphire
Precious coral
Sapphire Vs Precious coral
Sapphire
Coral
Sapphire Vs Coral

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