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Nephrite
Nephrite

Fayalite
Fayalite



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Nephrite
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Fayalite

Nephrite and Fayalite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Resinous
1.2 Pleochroism
None
Faint
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.600-1.6271.827-1.879
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.0270.042-0.051
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentAnthony et al

Nephrite and Fayalite Optic Character

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

Similar to their colors, Nephrite and Fayalite 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.