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Chrome Tourmaline and Umbalite Optical Properties


Umbalite and Chrome Tourmaline Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
0.02   
16

Transparency
Transparent, Translucent   
TransparentGemdat.org, Management Team (2012)   

Refractive Index
1.614-1.666   
1.730-1.820   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Not Available   

Birefringence
0.014-0.040   
Not Available   

Clarity
Transparent   
TransparentGemdat.org   

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Chrome Tourmaline and Umbalite Optic Character

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

Similar to their colors, Chrome Tourmaline and Umbalite 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, Chrome Tourmaline is Translucent and Transparent while Chrome Tourmaline is Translucent and Transparent in appearance.

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