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Verdite and Colemanite Optical Properties


Colemanite and Verdite Optical Properties


Optical Properties

Luster
Vitreous, Silky   
Vitreous   

Pleochroism
Extreme   
NilArthur Thomas   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
Transparent   

Refractive Index
1.580   
1.584-1.615   

Optic Character
Not Available   
Not Available   

Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c   
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a   

Birefringence
Not Available   
0.028-0.030   

Clarity
Translucent   
Transparent   

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Verdite and Colemanite Optic Character

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

Similar to their colors, Verdite and Colemanite 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, Verdite is Translucent while Verdite is Translucent in appearance.

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