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Crocoite
Crocoite

Benitoite
Benitoite



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Crocoite
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Benitoite

Crocoite and Benitoite Optical Properties

Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

Distinctly trichroic
O = colorless; E = purple

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

2.31-2.661.757-1.804
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-99990.047
0 0.296
👆🏻

Clarity

Transparent
Transparent

Crocoite and Benitoite Optic Character

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

Similar to their colors, Crocoite and Benitoite 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.