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Amazonite
Amazonite

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Foitite



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Amazonite and Foitite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
WeakMichael O’Donoghue
Strong: pale lavender dark blueAnthony et al
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent, Translucent to opaque
TranslucentAnthony et al, Translucent
1.5 Refractive Index
1.522-1.530
Not Available
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
1.8 Birefringence
0.008-0.010
Not Available
1.9 Clarity
Translucent
TranslucentAnthony et al

Amazonite and Foitite Optic Character

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

Amazonite and Foitite Transparency

Similar to their colors, Amazonite 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, Amazonite is Translucent and Translucent to opaque while Amazonite is Translucent and Translucent to opaque in appearance.

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