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Gahnospinel
Gahnospinel

Blue Beryl Maxixe
Blue Beryl Maxixe



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Gahnospinel
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Blue Beryl Maxixe
1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Strong dichroism: blue to colourless\
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.6 Transparency
Gemmological Tables (2004)
Transparent
1.7 Refractive Index
1.735-1.7901.560-1.604
Agate Opal
1 3.25
2.6 Optic Character
Not Available
Not Available
2.7 Crystal System
Isometric
Not Available
2.8 Birefringence
Not Available0.003-0.010
Achroite
0 0.296
2.13 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent