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Nephrite
Nephrite

Antigorite
Antigorite



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Nephrite
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Antigorite

Nephrite and Antigorite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
None
pale greenish yellow.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Translucent
1.5 Refractive Index
1.600-1.6271.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
0.027Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Nephrite and Antigorite Optic Character

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

Nephrite and Antigorite Transparency

Similar to their colors, Nephrite 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, Nephrite is Translucent while Nephrite is Translucent in appearance.