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Fayalite
Fayalite

Emerald
Emerald



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Fayalite
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Emerald

Fayalite and Emerald Optical Properties

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Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

Faint
Strong dichroism: yellow green Lazzarelli

Dispersion

0.030.01
0.005 1
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Transparency

TransparentAnthony et al
Transparent, Translucent, Transparent to translucent

Refractive Index

1.827-1.8791.565-1.602
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

0.042-0.0510.0040-0.0070
0 0.296
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Clarity

TransparentAnthony et al
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Fayalite and Emerald Optic Character

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

Similar to their colors, Fayalite and Emerald 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.