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Fayalite
Fayalite

Eosphorite
Eosphorite



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Fayalite
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Eosphorite

Fayalite and Eosphorite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Resinous

Pleochroism

Faint
Visible: X = yellow; Y = pink; Z = pale pink to colorless

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

TransparentAnthony et al
Transparent

Refractive Index

1.827-1.8791.639-1.672
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.042-0.0510.029-0.032
0 0.296
👆🏻

Clarity

TransparentAnthony et al
Transparent

Fayalite and Eosphorite Optic Character

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

Similar to their colors, Fayalite and Eosphorite 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.