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Anorthite
Anorthite

Fayalite
Fayalite



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Anorthite and Fayalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Resinous
1.2 Pleochroism
colorless.
Faint
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.575-1.588
1.827-1.879
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Orthorhombic
1.8 Birefringence
0.012-0.013
0.042-0.051
1.9 Clarity
Transparent
TransparentAnthony et al

Anorthite and Fayalite Optic Character

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

Anorthite and Fayalite Transparency

Similar to their colors, Anorthite 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, Anorthite is Transparent while Anorthite is Transparent in appearance.