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Crocoite
Crocoite

Erythrite
Erythrite



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Crocoite
X
Erythrite

Crocoite and Erythrite Optical Properties

Optical Properties

Luster

Adamantine
Subadamantine, Pearly

Pleochroism

Distinctly trichroic
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

2.31-2.661.626-1.629
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
-

Crocoite and Erythrite Optic Character

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

Similar to their colors, Crocoite and Erythrite 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.