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Hackmanite
Hackmanite

Powellite
Powellite



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Hackmanite
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Hackmanite and Powellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Greasy, Subadamantine
1.2 Pleochroism
Not Available
In deeply colored specimens: blue greenAnthony et al
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Transparent
1.5 Refractive Index
1.483-1.4871.974-1.984
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Hackmanite and Powellite Optic Character

Hackmanite and Powellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Hackmanite and Powellite 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 Hackmanite and Powellite 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.

Hackmanite and Powellite Transparency

Similar to their colors, Hackmanite and Powellite 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, Hackmanite is Gemmological Tables (2004) while Hackmanite is Gemmological Tables (2004) in appearance.