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Agate and Sodalite Optical Properties


Sodalite and Agate Optical Properties


Optical Properties

Luster
Vitreous   
Greasy   

Pleochroism
Absent   
AbsentWalter Schumann   

Dispersion
None   
0.02   
21

Transparency
Translucent   
Transparent, Translucent, Opaque   

Refractive Index
1.530-1.543   
1.478-1.488   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
cubic   

Birefringence
0.004   
Not Available   

Clarity
Translucent   
Transparent   

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Agate and Sodalite Optic Character

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

Similar to their colors, Agate 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, Agate is Translucent while Agate is Translucent in appearance.

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