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Ammolite and Variscite Optical Properties


Variscite and Ammolite Optical Properties


Optical Properties

Luster
Silky, Vitreous  
Vitreous, Waxy  

Pleochroism
None  
-  

Dispersion
0.01  
99+
0.01  
99+

Transparency
-  
Translucent, Opaque . May be translucent when backlit on the edges.  

Refractive Index
1.520-1.670  
1.560-1.594  

Optic Character
-  
-  

Crystal System
Trigonal  
Orthorhombic  

Birefringence
0.135-0.145  
0.031  

Clarity
-  
Translucent  

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Ammolite and Variscite Optic Character

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

Similar to their colors, Ammolite and Variscite 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, Ammolite is while Ammolite is in appearance.

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