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Fayalite and Stichtite Optical Properties


Stichtite and Fayalite Optical Properties


Optical Properties

Luster
Vitreous, Resinous   
Waxy, Resinous   

Pleochroism
Faint   
Weak   

Dispersion
Not Available   
Not Available   

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

Refractive Index
1.827-1.879   
1.516-1.544   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Trigonal   

Birefringence
0.042-0.051   
0.026   

Clarity
TransparentAnthony et al   
Translucent   

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Fayalite and Stichtite Optic Character

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

Similar to their colors, Fayalite and Stichtite 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, Fayalite is Handbook of mineralogy (2001) and TransparentAnthony et al while Fayalite is Handbook of mineralogy (2001) and TransparentAnthony et al in appearance.

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