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Fayalite
Fayalite

Emerald
Emerald



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Fayalite and Emerald Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Resinous
Vitreous
1.2 Pleochroism
Faint
Strong dichroism: yellow green Lazzarelli
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.01
Rank: 26 (Overall)
Fluorite Optical Properties
1.4 Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.827-1.879
1.565-1.602
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Hexagonal
1.8 Birefringence
0.042-0.051
0.0040-0.0070
1.9 Clarity
TransparentAnthony et al
Color grading system

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