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Hercynite
Hercynite

Pargasite
Pargasite



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Hercynite
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Pargasite

Hercynite and Pargasite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.80-1.831.613-1.663
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
monoclinic
1.8 Birefringence
Not Available0.020
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Hercynite and Pargasite Optic Character

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

Hercynite and Pargasite Transparency

Similar to their colors, Hercynite and Pargasite 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, Hercynite is Translucent while Hercynite is Translucent in appearance.