Fayalite and Eosphorite Optical Properties

Fayalite

Eosphorite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Resinous

1.2 Pleochroism

Faint

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

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentAnthony et al, Handbook of mineralogy (2001)

Transparent

1.5 Refractive Index

1.827-1.8791.639-1.672

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

1.8 Birefringence

0.042-0.0510.029-0.032

0 0.296

1.9 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.

Compare Yellow Gemstones

Fayalite Vs Garnet

Fayalite Vs Gadolinium Gallium Garnet

Fayalite Vs Hackmanite

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 Handbook of mineralogy (2001) and TransparentAnthony et al while Fayalite is Handbook of mineralogy (2001) and TransparentAnthony et al in appearance.