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Beudantite
Beudantite

Powellite
Powellite



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Beudantite
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Powellite

Beudantite and Powellite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Greasy, Subadamantine

Pleochroism

visible
In deeply colored specimens: blue greenAnthony et al

Dispersion

0.030.03
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.9571.974-1.984
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.014-9999
0 0.296
👆🏻

Clarity

-
Transparent

Beudantite and Powellite Optic Character

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

Beudantite and Powellite Transparency

Similar to their colors, Beudantite 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, Beudantite is while Beudantite is in appearance.