×

Rosasite
Rosasite
☒

Biotite
Biotite
☒



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X
Rosasite
X
Biotite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Silky, Vitreous
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
0.03
-
1.672-1.688
-
monoclinic
0.139-0.143
-
 
Vitreous, Pearly
Strong
-
-
1.565-1.625
-
monoclinic
0.03-0.07
-

Compare Blue Gemstones

Blue Gemstones

Lawsonite
Lawsonite
Kainite
Kainite
Hauyne
Hauyne
Biotite
Sulfur
Biotite Vs Sulfur
Biotite
Sylvite
Biotite Vs Sylvite
Biotite
Paraiba
Biotite Vs Paraiba

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