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Tourmaline and Girasol Optical Properties


Girasol and Tourmaline Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
typically moderate to strong   
AbsentWalter Schumann   

Dispersion
0.02   
22
None   

Transparency
Transparent, Translucent, Transparent to opaque   
Transparent   

Refractive Index
1.614-1.666   
1.37-1.52   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
0.014-0.040   
Not Available   

Clarity
Transparent   
Transparent   

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Tourmaline and Girasol Optic Character

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

Similar to their colors, Tourmaline and Girasol 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, Tourmaline is Translucent, Transparent and Transparent to opaque while Tourmaline is Translucent, Transparent and Transparent to opaque in appearance.

Semi Precious

Semi Precious


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