Kainite and Foitite Optical Properties

Kainite

Foitite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Visible: X = violet

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.494Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

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

1.8 Birefringence

0.022Not Available

0 0.296

1.9 Clarity

Not Available

TranslucentAnthony et al

Kainite and Foitite Optic Character

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

Similar to their colors, Kainite 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, Kainite is Not Available while Kainite is Not Available in appearance.