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Chromite
Chromite

Foitite
Foitite



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Chromite
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Foitite

Chromite and Foitite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

none.
Strong: pale lavender dark blueAnthony et al

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
TranslucentAnthony et al, Translucent

Refractive Index

2.08-2.16-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
TranslucentAnthony et al

Chromite and Foitite Optic Character

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

Chromite and Foitite Transparency

Similar to their colors, Chromite and Foitite 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, Chromite is while Chromite is in appearance.