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Fayalite
Fayalite

Charlesite
Charlesite



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Fayalite
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Charlesite

Fayalite and Charlesite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

Faint
Nearly colorless to pale golden yellow

Dispersion

0.030.03
0.005 1
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Transparency

TransparentAnthony et al
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Refractive Index

1.827-1.8791.492
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.042-0.051-9999
0 0.296
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Clarity

TransparentAnthony et al
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Fayalite and Charlesite Optic Character

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

Fayalite and Charlesite Transparency

Similar to their colors, Fayalite and Charlesite 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 TransparentAnthony et al while Fayalite is TransparentAnthony et al in appearance.