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Pollucite
Pollucite

Lazulite
Lazulite



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Pollucite
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Lazulite

Pollucite and Lazulite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
-

Pleochroism

-
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli

Dispersion

0.010.01
0.005 1
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Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.517-1.5251.604-1.646
1 3.25
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Optic Character

-
-

Crystal System

Isometric
monoclinic

Birefringence

-99990.031-0.036
0 0.296
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Clarity

Transparent
Transparent

Pollucite and Lazulite Optic Character

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

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