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Narsarsukite and Variscite Optical Properties


Variscite and Narsarsukite Optical Properties


Optical Properties

Luster
Vitreous, Pearly  
Vitreous, Waxy  

Pleochroism
Weak; O = colorless to yellow; E = colorless to honey-yellow  
-  

Dispersion
0.02  
99+
0.01  
99+

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

Refractive Index
1.610-1.647  
1.560-1.594  

Optic Character
-  
-  

Crystal System
tetragonal  
Orthorhombic  

Birefringence
0.021  
0.031  

Clarity
Transparent  
Translucent  

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Narsarsukite and Variscite Optic Character

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

Similar to their colors, Narsarsukite 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, Narsarsukite is Transparent and Translucent while Narsarsukite is Transparent and Translucent in appearance.

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