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Cryolite
Cryolite

Hackmanite
Hackmanite



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Cryolite
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Hackmanite

Cryolite and Hackmanite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy, Pearly
Vitreous
1.2 Pleochroism
colorless.
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004)
1.5 Refractive Index
1.338-1.3391.483-1.487
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.001Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Cryolite and Hackmanite Optic Character

Cryolite and Hackmanite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cryolite and Hackmanite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Cryolite and Hackmanite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Cryolite and Hackmanite Transparency

Similar to their colors, Cryolite and Hackmanite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Cryolite is Gemmological Tables (2004) More from other references while Cryolite is Gemmological Tables (2004) More from other references in appearance.