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Nephrite
Nephrite

Staurolite
Staurolite



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Nephrite
X
Staurolite

Nephrite and Staurolite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Resinous
1.2 Pleochroism
None
X = colorless; Y = pale yellow; Z = golden yellow
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.600-1.6271.736-1.762
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.0270.009-0.015
Achroite
0 0.296
1.9 Clarity
Translucent
Blue Chart Gem Identification (2010) More from other references

Nephrite and Staurolite Optic Character

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

Similar to their colors, Nephrite and Staurolite 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.