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Tourmaline and Jet Optical Properties


Jet
Jet and Tourmaline Optical Properties


Optical Properties

Luster
Vitreous   
Waxy   

Pleochroism
typically moderate to strong   
AbsentWalter Schumann   

Dispersion
0.02   
22
None   

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

Refractive Index
1.614-1.666   
1.640-1.680   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Amorphous   

Birefringence
0.014-0.040   
Not Available   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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Tourmaline and Jet Optic Character

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

Similar to their colors, Tourmaline and Jet 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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