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Staurolite
Staurolite

Nephrite
Nephrite



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X
Staurolite
X
Nephrite

Staurolite and Nephrite Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Greasy

Pleochroism

X = colorless; Y = pale yellow; Z = golden yellow
None

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.736-1.7621.600-1.627
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.009-0.0150.027
0 0.296
👆🏻

Clarity

-
Translucent

Staurolite and Nephrite Optic Character

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

Staurolite and Nephrite Transparency

Similar to their colors, Staurolite and Nephrite 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, Staurolite is while Staurolite is in appearance.