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Powellite
Powellite

Tigers Eye
Tigers Eye



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Powellite
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Tigers Eye

Powellite and Tigers Eye Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Greasy, Subadamantine
In deeply colored specimens: blue greenAnthony et al
0.03
Transparent
1.974-1.984
-
-
-9999
Transparent
 
Silky
-
0.01
Opaque
1.534-1.540
-
Trigonal
-9999
-

Powellite and Tigers Eye Optic Character

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

Similar to their colors, Powellite and Tigers Eye 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 while Powellite is in appearance.