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Powellite

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Powellite and Inderite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Subadamantine
Vitreous, Pearly, Greasy
1.2 Pleochroism
In deeply colored specimens: blue greenAnthony et al
Not Available
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Gemmological Tables (2004)
1.5 Refractive Index
1.974-1.984
1.488-1.505
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Not Available
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
1.8 Birefringence
Not Available
0.017
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Powellite and Inderite Optic Character

Powellite and Inderite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Powellite and Inderite 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 Inderite 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. Inderite has Biaxial/+ character.

Powellite and Inderite Transparency

Similar to their colors, Powellite and Inderite 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.