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Nephrite
Nephrite

Aegirine
Aegirine



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Nephrite
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Aegirine

Nephrite and Aegirine Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Resinous
1.2 Pleochroism
None
X = emerald green
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.600-1.6271.720-1.778
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.0270.037-0.061
Achroite
0 0.296
1.9 Clarity
Translucent
Gemmological Tables (2004) More from other references

Nephrite and Aegirine Optic Character

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

Similar to their colors, Nephrite and Aegirine 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.