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Andalusite
Andalusite

Variscite
Variscite



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Andalusite
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Variscite

Andalusite and Variscite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Vitreous, Waxy

Pleochroism

strongly trichroic
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent, Opaque . May be translucent when backlit on the edges.

Refractive Index

1.627-1.6501.560-1.594
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.009-0.0100.031
0 0.296
👆🏻

Clarity

Transparent
Translucent

Andalusite and Variscite Optic Character

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

Similar to their colors, Andalusite and Variscite 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.