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Rhyolite and Mottramite Optical Properties


Mottramite and Rhyolite Optical Properties


Optical Properties

Luster
Not Available   
Greasy   

Pleochroism
Not Available   
Visible X=Y= canary yellow to greenish yellow   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Not Available   

Refractive Index
Not Available   
2.170   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
Not Available   
0.150   

Clarity
Not Available   
Not Available   

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<< Physical Properties

Rhyolite and Mottramite Optic Character

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

Similar to their colors, Rhyolite and Mottramite 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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