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Goethite and Watermelon Tourmaline Optical Properties


Watermelon Tourmaline and Goethite Optical Properties


Optical Properties

Luster
Adamantine   
Vitreous   

Pleochroism
VisibleArthur Thomas   
Not Available   

Dispersion
Not Available   
0.02   
22

Transparency
Gemstones (2009)   
TransparentGemdat.org, Management Team (2012)   

Refractive Index
2.26-2.398   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Not Available   

Birefringence
0.138   
0.014-0.040   

Clarity
Gemstones (2009)   
TransparentGemdat.org   

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Goethite and Watermelon Tourmaline Optic Character

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

Similar to their colors, Goethite 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, Goethite is Gemstones (2009) while Goethite is Gemstones (2009) in appearance.

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