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Violane
Violane

Foitite
Foitite



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Violane
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Foitite

Violane and Foitite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
Strong: pale lavender dark blueAnthony et al
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
TranslucentAnthony et al, Translucent
1.5 Refractive Index
1.668-1.703Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
1.8 Birefringence
0.024-0.030Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
TranslucentAnthony et al

Violane and Foitite Optic Character

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

Violane and Foitite Transparency

Similar to their colors, Violane 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, Violane is Translucent while Violane is Translucent in appearance.