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Sardonyx and Fayalite Optical Properties


Fayalite and Sardonyx Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Resinous   

Pleochroism
Not Available   
Faint   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
TransparentAnthony et al, Handbook of mineralogy (2001)   

Refractive Index
1.530-1.543   
1.827-1.879   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.008-0.010   
0.042-0.051   

Clarity
Translucent   
TransparentAnthony et al   

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<< Physical Properties

Sardonyx and Fayalite Optic Character

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

Similar to their colors, Sardonyx and Fayalite 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, Sardonyx is Translucent while Sardonyx is Translucent in appearance.

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