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Pollucite
Pollucite

Fayalite
Fayalite



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Pollucite
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Fayalite

Pollucite and Fayalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Resinous
1.2 Pleochroism
Not Available
Faint
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
TransparentAnthony et al, Handbook of mineralogy (2001)
1.5 Refractive Index
1.517-1.5251.827-1.879
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Isometric
Orthorhombic
1.8 Birefringence
Not Available0.042-0.051
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentAnthony et al

Pollucite and Fayalite Optic Character

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

Pollucite and Fayalite Transparency

Similar to their colors, Pollucite 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, Pollucite is Translucent and Transparent while Pollucite is Translucent and Transparent in appearance.