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Tortoiseshell and Celestine Optical Properties


Celestine and Tortoiseshell Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Pearly   

Pleochroism
Not Available   
Weakly trichroiC   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Gems   

Refractive Index
1.540-1.560   
1.619-1.635   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
Not Available   
0.004-0.012   

Clarity
OpaqueUlrich Henn and Claudio C. Milisenda   
Gems   

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Tortoiseshell and Celestine Optic Character

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

Similar to their colors, Tortoiseshell and Celestine 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, Tortoiseshell is Gemmological Tables (2004) while Tortoiseshell is Gemmological Tables (2004) in appearance.

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