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Amethyst and Sodalite Optical Properties


Sodalite and Amethyst Optical Properties


Optical Properties

Luster
Vitreous   
Greasy   

Pleochroism
None   
AbsentWalter Schumann   

Dispersion
0.01   
27
0.02   
21

Transparency
Transparent, Transparent to translucent   
Transparent, Translucent, Opaque   

Refractive Index
1.544-1.553   
1.478-1.488   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
cubic   

Birefringence
0.009   
Not Available   

Clarity
Transparent   
Transparent   

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Amethyst and Sodalite Optic Character

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

Similar to their colors, Amethyst and Sodalite 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, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.

Semi Precious

Semi Precious


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