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Emerald
Emerald

Phlogopite
Phlogopite



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Emerald
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Phlogopite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Strong dichroism: yellow green Lazzarelli
0.01
Transparent, Translucent, Transparent to translucent
1.565-1.602
-
Hexagonal
0.0040-0.0070
-
 
Pearly
-
0.04
-
1.530-1.573
-
monoclinic
0.0280-0.0450
-