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Umbalite and Watermelon Tourmaline Optical Properties


Watermelon Tourmaline and Umbalite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Not Available   
Not Available   

Dispersion
0.02   
16
0.02   
22

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

Refractive Index
1.730-1.820   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Not Available   

Birefringence
Not Available   
0.014-0.040   

Clarity
TransparentGemdat.org   
TransparentGemdat.org   

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<< Physical Properties

Umbalite and Watermelon Tourmaline Optic Character

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

Similar to their colors, Umbalite and Watermelon 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, Umbalite is Management Team (2012) and TransparentGemdat.org while Umbalite is Management Team (2012) and TransparentGemdat.org in appearance.

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