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Mottramite and Ammolite Optical Properties


Ammolite and Mottramite Optical Properties


Optical Properties

Luster
Greasy   
Silky, Vitreous   

Pleochroism
Visible X=Y= canary yellow to greenish yellow   
None   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Not Available   

Refractive Index
2.170   
1.520-1.670   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Trigonal   

Birefringence
0.150   
0.135-0.145   

Clarity
Not Available   
Not Available   

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<< Physical Properties

Mottramite and Ammolite Optic Character

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

Similar to their colors, Mottramite and Ammolite 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, Mottramite is Not Available while Mottramite is Not Available in appearance.

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