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Aegirine
Aegirine

Fayalite
Fayalite



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Aegirine
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Fayalite

Aegirine and Fayalite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Resinous
Vitreous, Resinous
1.2 Pleochroism
X = emerald green
Faint
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.720-1.7781.827-1.879
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Orthorhombic
1.8 Birefringence
0.037-0.0610.042-0.051
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
TransparentAnthony et al

Aegirine and Fayalite Optic Character

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

Aegirine and Fayalite Transparency

Similar to their colors, Aegirine and Fayalite 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, Aegirine is Gemmological Tables (2004) More from other references while Aegirine is Gemmological Tables (2004) More from other references in appearance.