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Andalusite
Andalusite

Serendibite
Serendibite



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Andalusite
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Serendibite

Andalusite and Serendibite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Vitreous

Pleochroism

strongly trichroic
visible

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.627-1.6501.696-1.702
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Triclinic

Birefringence

0.009-0.0100.005
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Andalusite and Serendibite Optic Character

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

Similar to their colors, Andalusite and Serendibite 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.