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Sinhalite and Tortoiseshell Optical Properties


Tortoiseshell and Sinhalite Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli   
Not Available   

Dispersion
0.02   
21
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Gemmological Tables (2004)   

Refractive Index
1.665-1.712   
1.540-1.560   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Not Available   

Birefringence
0.036-0.042   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
OpaqueUlrich Henn and Claudio C. Milisenda   

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Sinhalite and Tortoiseshell Optic Character

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

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

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