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Powellite
Powellite

Vesuvianite
Vesuvianite



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Vesuvianite

Powellite and Vesuvianite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Subadamantine
Vitreous, Resinous
1.2 Pleochroism
In deeply colored specimens: blue greenAnthony et al
slight in colored varieties
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Not Available
1.5 Refractive Index
1.974-1.9841.703-1.752
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
tetragonal
1.8 Birefringence
Not Available0.004-0.006
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Powellite and Vesuvianite Optic Character

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

Similar to their colors, Powellite and Vesuvianite 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.