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Anthophyllite and Variscite Optical Properties


Variscite and Anthophyllite Optical Properties


Optical Properties

Luster
Vitreous, Pearly  
Vitreous, Waxy  

Pleochroism
-  
-  

Dispersion
0.01  
99+
0.01  
99+

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

Refractive Index
1.603-1.690  
1.560-1.594  

Optic Character
Biaxial/+  
-  

Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma  
Orthorhombic  

Birefringence
-9999  
0.031  

Clarity
Transparent  
Translucent  

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Anthophyllite and Variscite Optic Character

Anthophyllite and Variscite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Anthophyllite 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 Anthophyllite 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. Anthophyllite has Biaxial/+ character.

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Anthophyllite and Variscite Transparency

Similar to their colors, Anthophyllite 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, Anthophyllite is Transparent while Anthophyllite is Transparent in appearance.

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