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Rhyolite and Andalusite Optical Properties


Andalusite and Rhyolite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Greasy   

Pleochroism
Not Available   
strongly trichroic   

Dispersion
Not Available   
0.02   
23

Transparency
Not Available   
Transparent, Translucent   

Refractive Index
Not Available   
1.627-1.650   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
Not Available   
0.009-0.010   

Clarity
Not Available   
Transparent   

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<< Physical Properties

Rhyolite and Andalusite Optic Character

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

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Rhyolite and Andalusite Transparency

Similar to their colors, Rhyolite and Andalusite 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, Rhyolite is Not Available while Rhyolite is Not Available in appearance.

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