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Riebeckite
Riebeckite

Nephrite
Nephrite



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Riebeckite
X
Nephrite

Riebeckite and Nephrite Optical Properties

Optical Properties

Luster

Vitreous, Silky
Vitreous, Greasy

Pleochroism

X = blue
None

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.680-1.6981.600-1.627
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.005-0.0080.027
0 0.296
👆🏻

Clarity

-
Translucent

Riebeckite and Nephrite Optic Character

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

Riebeckite and Nephrite Transparency

Similar to their colors, Riebeckite 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, Riebeckite is while Riebeckite is in appearance.