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Moonstone and Fayalite Optical Properties


Fayalite and Moonstone Optical Properties


Optical Properties

Luster
Pearly   
Vitreous, Resinous   

Pleochroism
AbsentWalter Schumann   
Faint   

Dispersion
None   
Not Available   

Transparency
Transparent, Transparent to translucent   
TransparentAnthony et al, Handbook of mineralogy (2001)   

Refractive Index
1.518-1.527   
1.827-1.879   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
0.006-0.007   
0.042-0.051   

Clarity
Transparent   
TransparentAnthony et al   

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Moonstone and Fayalite Optic Character

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

Similar to their colors, Moonstone 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.

Semi Precious

Semi Precious


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