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Gyrolite and Andalusite Optical Properties


Andalusite and Gyrolite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Vitreous, Greasy   

Pleochroism
Not Available   
strongly trichroic   

Dispersion
Not Available   
0.02   
23

Transparency
Not Available   
Transparent, Translucent   

Refractive Index
1.535   
1.627-1.650   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Orthorhombic   

Birefringence
0.0140   
0.009-0.010   

Clarity
Not Available   
Transparent   

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Gyrolite and Andalusite Optic Character

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

Similar to their colors, Gyrolite 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, Gyrolite is Not Available while Gyrolite is Not Available in appearance.

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