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Eosphorite
Eosphorite

Powellite
Powellite



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Eosphorite
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Powellite

Eosphorite and Powellite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Greasy, Subadamantine

Pleochroism

Visible: X = yellow; Y = pink; Z = pale pink to colorless
In deeply colored specimens: blue greenAnthony et al

Dispersion

0.010.03
0.005 1
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Transparency

Transparent
Transparent

Refractive Index

1.639-1.6721.974-1.984
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.029-0.032-9999
0 0.296
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Clarity

Transparent
Transparent

Eosphorite and Powellite Optic Character

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

Eosphorite and Powellite Transparency

Similar to their colors, Eosphorite 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, Eosphorite is Transparent while Eosphorite is Transparent in appearance.