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Jet and Tourmaline Optical Properties


Jet
Tourmaline and Jet Optical Properties


Optical Properties

Luster
Waxy   
Vitreous   

Pleochroism
AbsentWalter Schumann   
typically moderate to strong   

Dispersion
None   
0.02   
22

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

Refractive Index
1.640-1.680   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Amorphous   
Trigonal   

Birefringence
Not Available   
0.014-0.040   

Clarity
Gemmological Tables (2004) More from other references   
Transparent   

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Jet and Tourmaline Optic Character

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

Similar to their colors, Jet and Tourmaline 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, Jet is Gemmological Tables (2004) More from other references while Jet is Gemmological Tables (2004) More from other references in appearance.

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