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Sodalite and Beryllonite Optical Properties


Beryllonite and Sodalite Optical Properties


Optical Properties

Luster
Greasy   
Vitreous, Adamantine, Pearly   

Pleochroism
AbsentWalter Schumann   
AbsentWalter Schumann   

Dispersion
0.02   
21
0.01   
29

Transparency
Transparent, Translucent, Opaque   
Gemmological Tables (2004) More from other references   

Refractive Index
1.478-1.488   
1.552-1.562   

Optic Character
Not Available   
Not Available   

Crystal System
cubic   
monoclinic   

Birefringence
Not Available   
0.009   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Sodalite and Beryllonite Optic Character

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

Similar to their colors, Sodalite and Beryllonite 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, Sodalite is Opaque, Translucent and Transparent while Sodalite is Opaque, Translucent and Transparent in appearance.

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