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Emerald and Sodalite Optical Properties


Sodalite and Emerald Optical Properties


Optical Properties

Luster
Vitreous   
Greasy   

Pleochroism
Strong dichroism: yellow green Lazzarelli   
AbsentWalter Schumann   

Dispersion
0.01   
26
0.02   
21

Transparency
Transparent, Translucent, Transparent to translucent   
Transparent, Translucent, Opaque   

Refractive Index
1.565-1.602   
1.478-1.488   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
cubic   

Birefringence
0.0040-0.0070   
Not Available   

Clarity
Color grading system   
Transparent   

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Emerald and Sodalite Optic Character

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

Similar to their colors, Emerald 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, Emerald is Translucent, Transparent and Transparent to translucent while Emerald is Translucent, Transparent and Transparent to translucent in appearance.

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