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Powellite
Powellite

Gedrite
Gedrite



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Powellite
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Gedrite

Powellite and Gedrite Optical Properties

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1 Optical Properties
1.1 Luster
Greasy, Subadamantine
Fibrous, Vitreous
1.2 Pleochroism
In deeply colored specimens: blue greenAnthony et al
Weak to moderate
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent
1.5 Refractive Index
1.974-1.9841.625-1.718
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Powellite and Gedrite Optic Character

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

Powellite and Gedrite Transparency

Similar to their colors, Powellite and Gedrite 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, Powellite is Transparent while Powellite is Transparent in appearance.