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Andalusite
Andalusite

Variscite
Variscite



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Andalusite
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Variscite

Andalusite and Variscite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Waxy
1.2 Pleochroism
strongly trichroic
MissingWalter Schumann
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent, Opaque . May be translucent when backlit on the edges.
1.5 Refractive Index
1.627-1.6501.560-1.594
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.009-0.0100.031
Achroite
0 0.296
1.9 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 Translucent and Transparent while Andalusite is Translucent and Transparent in appearance.