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Feldspar
Feldspar

Pollucite
Pollucite



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Feldspar
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Pollucite

Feldspar and Pollucite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
None
0.01
Transparent, Translucent
1.518-1.570
-
Triclinic or monoclinic
0.008-0.010
Transparent
 
Vitreous, Greasy
-
0.01
Transparent, Translucent
1.517-1.525
-
Isometric
-9999
Transparent

Feldspar and Pollucite Optic Character

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

Feldspar and Pollucite Transparency

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