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Andalusite
Andalusite

Kunzite
Kunzite



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Andalusite
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Kunzite

Andalusite and Kunzite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Vitreous

Pleochroism

strongly trichroic
Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.627-1.6501.657-1.681
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.009-0.0100.014-0.016
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Andalusite and Kunzite Optic Character

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

Andalusite and Kunzite Transparency

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