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Watermelon Tourmaline and Howlite Optical Properties


Howlite and Watermelon Tourmaline Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Not Available   
NilArthur Thomas   

Dispersion
0.02   
22
Not Available   

Transparency
TransparentGemdat.org, Management Team (2012)   
Gemmological Tables (2004) More from other references   

Refractive Index
1.614-1.666   
1.583-1.608   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
monoclinic   

Birefringence
0.014-0.040   
0.019   

Clarity
TransparentGemdat.org   
Gemmological Tables (2004) More from other references   

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Watermelon Tourmaline and Howlite Optic Character

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

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

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