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Andalusite
Andalusite

Edenite
Edenite



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Andalusite
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Edenite

Andalusite and Edenite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Vitreous

Pleochroism

strongly trichroic
Distinct

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.627-1.6501.606-1.649
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.009-0.010-9999
0 0.296
👆🏻

Clarity

Transparent
-

Andalusite and Edenite Optic Character

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

Similar to their colors, Andalusite and Edenite 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.