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Chrysoberyl and Watermelon Tourmaline Optical Properties


Watermelon Tourmaline and Chrysoberyl Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
X = red; Y = yellow-orange; Z = emerald-green   
Not Available   

Dispersion
0.02   
24
0.02   
22

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

Refractive Index
1.746-1.763   
1.614-1.666   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Orthorhombic   
Not Available   

Birefringence
0.007-0.013   
0.014-0.040   

Clarity
Transparent   
TransparentGemdat.org   

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Chrysoberyl and Watermelon Tourmaline Optic Character

Chrysoberyl and Watermelon Tourmaline optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Chrysoberyl 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 Chrysoberyl 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. Chrysoberyl has Biaxial/+ character.

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Chrysoberyl and Watermelon Tourmaline Transparency

Similar to their colors, Chrysoberyl 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, Chrysoberyl is Translucent, Transparent and Transparent to translucent while Chrysoberyl is Translucent, Transparent and Transparent to translucent in appearance.

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