Albite and Foitite Optical Properties

Albite

Foitite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Vitreous

1.2 Pleochroism

colorless.

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

1.00NA

0.007 1

1.4 Transparency

Transparent, Translucent

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.525-1.542Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

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

1.8 Birefringence

0.008-0.011Not Available

0 0.296

1.9 Clarity

Transparent

TranslucentAnthony et al

Albite and Foitite Optic Character

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

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Albite and Foitite Transparency

Similar to their colors, Albite 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, Albite is Translucent and Transparent while Albite is Translucent and Transparent in appearance.