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Crocoite
Crocoite

Nephrite
Nephrite



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Crocoite
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Nephrite

Crocoite and Nephrite Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous, Greasy

Pleochroism

Distinctly trichroic
None

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

2.31-2.661.600-1.627
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
monoclinic

Birefringence

-99990.027
0 0.296
👆🏻

Clarity

Transparent
Translucent

Crocoite and Nephrite Optic Character

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

Crocoite and Nephrite Transparency

Similar to their colors, Crocoite 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, Crocoite is Transparent while Crocoite is Transparent in appearance.