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Barite
Barite

Lazurite
Lazurite



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Barite
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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
colorless.
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.9 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.10 Refractive Index
Not Available1.500
Agate Opal
1 3.25
2.5 Optic Character
Not Available
Not Available
2.6 Crystal System
Orthorhombic
Isometric
2.7 Birefringence
Not AvailableNot Available
Achroite
0 0.296
2.8 Clarity
Not Available
Gemmological Tables (2004) More from other references