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Powellite
Powellite

Antigorite
Antigorite



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Powellite
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Antigorite

Powellite and Antigorite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Subadamantine
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
In deeply colored specimens: blue greenAnthony et al
pale greenish yellow.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Translucent
1.5 Refractive Index
1.974-1.9841.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Powellite and Antigorite Optic Character

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

Similar to their colors, Powellite and Antigorite 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.