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Nephrite
Nephrite

Piemontite
Piemontite



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Nephrite
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Piemontite

Nephrite and Piemontite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
None
visible
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.600-1.6271.725-1.756
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.0270.025-0.076
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Nephrite and Piemontite Optic Character

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

Similar to their colors, Nephrite and Piemontite 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.