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Axinite
Axinite

Kyanite
Kyanite



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Axinite
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Kyanite

Axinite and Kyanite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Strong
Trichroic

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.656-1.7041.71-1.74
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Triclinic
Triclinic

Birefringence

0.009-0.012-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Axinite and Kyanite Optic Character

Axinite and Kyanite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Axinite and Kyanite 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 Axinite and Kyanite 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. Axinite has Biaxial/+ character.

Axinite and Kyanite Transparency

Similar to their colors, Axinite and Kyanite 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, Axinite is while Axinite is in appearance.