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Rhyolite and Tortoiseshell Optical Properties


Tortoiseshell and Rhyolite Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
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Not Available   

Transparency
Not Available   
Gemmological Tables (2004)   

Refractive Index
Not Available   
1.540-1.560   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
Not Available   
Not Available   

Clarity
Not Available   
OpaqueUlrich Henn and Claudio C. Milisenda   

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<< Physical Properties

Rhyolite and Tortoiseshell Optic Character

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

Similar to their colors, Rhyolite 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, Rhyolite is Not Available while Rhyolite is Not Available in appearance.

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