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Indicolite Blue Tourmaline and Colemanite Optical Properties


Colemanite and Indicolite Blue Tourmaline Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Strong: dark blue light blueWalter Schumann   
NilArthur Thomas   

Dispersion
0.02   
22
Not Available   

Transparency
Transparent, Translucent   
Transparent   

Refractive Index
1.614-1.666   
1.584-1.615   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a   

Birefringence
0.014-0.040   
0.028-0.030   

Clarity
Transparent   
Transparent   

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Indicolite Blue Tourmaline and Colemanite Optic Character

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

Similar to their colors, Indicolite Blue Tourmaline 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, Indicolite Blue Tourmaline is Translucent and Transparent while Indicolite Blue Tourmaline is Translucent and Transparent in appearance.

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