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Hercynite
Hercynite

Nephrite
Nephrite



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Hercynite
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Nephrite

Hercynite and Nephrite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Greasy
1.2 Pleochroism
Not Available
None
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Translucent
1.5 Refractive Index
1.80-1.831.600-1.627
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 Available0.027
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Hercynite and Nephrite Optic Character

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

Similar to their colors, Hercynite and Nephrite 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.