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Nephrite
Nephrite

Ammolite
Ammolite



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Nephrite
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Ammolite

Nephrite and Ammolite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Silky, Vitreous
1.2 Pleochroism
None
None
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.600-1.6271.520-1.670
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.0270.135-0.145
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Nephrite and Ammolite Optic Character

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

Similar to their colors, Nephrite and Ammolite 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.