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Kornerupine and Tourmaline Optical Properties


Tourmaline and Kornerupine Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
X = colorless to green; Y = colorless   
typically moderate to strong   

Dispersion
0.02   
21
0.02   
22

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Translucent, Transparent to opaque   

Refractive Index
1.660-1.685   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Trigonal   

Birefringence
0.012-0.017   
0.014-0.040   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Kornerupine and Tourmaline Optic Character

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

Similar to their colors, Kornerupine and 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, Kornerupine is Gemmological Tables (2004) More from other references while Kornerupine is Gemmological Tables (2004) More from other references in appearance.

Green Gemstones

Green Gemstones


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