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Fayalite
Fayalite

Chrysoberyl
Chrysoberyl



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Fayalite
X
Chrysoberyl

Fayalite and Chrysoberyl Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Resinous
Faint
0.03
TransparentAnthony et al
1.827-1.879
-
Orthorhombic
0.042-0.051
TransparentAnthony et al
 
Vitreous
X = red; Y = yellow-orange; Z = emerald-green
0.02
Transparent, Translucent, Transparent to translucent
1.746-1.763
Biaxial/+
Orthorhombic
0.007-0.013
Transparent

Fayalite and Chrysoberyl Optic Character

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

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