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Hibonite
Hibonite
☒

Pleonaste
Pleonaste
☒



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Hibonite
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Pleonaste
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
O = brownish gray; E = gray
0.02
-
1.79-1.807
-
Hexagonal
-9999
-
 
-
-
0.03
-
1.780
-
-
-9999
-

Compare Blue Gemstones

Blue Gemstones

Meionite
Meionite
Microcline
Microcline
Morion
Morion
Pleonaste
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Pleonaste
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Pleonaste Vs Jeremejevite
Pleonaste
Lazurite
Pleonaste Vs Lazurite

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