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Crocoite
Crocoite

Goethite
Goethite



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Crocoite
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Goethite

Crocoite and Goethite Optical Properties

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Optical Properties

Luster

Adamantine
Adamantine

Pleochroism

Distinctly trichroic
VisibleArthur Thomas

Dispersion

0.020.05
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

2.31-2.662.26-2.398
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-99990.138
0 0.296
👆🏻

Clarity

Transparent
-

Crocoite and Goethite Optic Character

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

Similar to their colors, Crocoite and Goethite 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.