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Hodgkinsonite
Hodgkinsonite

Foitite
Foitite



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Hodgkinsonite
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Foitite

Hodgkinsonite and Foitite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Strong: pale lavender dark blueAnthony et al

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
TranslucentAnthony et al, Translucent

Refractive Index

1.720-1.746-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

0.026-9999
0 0.296
👆🏻

Clarity

-
TranslucentAnthony et al

Hodgkinsonite and Foitite Optic Character

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

Hodgkinsonite and Foitite Transparency

Similar to their colors, Hodgkinsonite 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, Hodgkinsonite is while Hodgkinsonite is in appearance.