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Norbergite
Norbergite

Pollucite
Pollucite



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Norbergite
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Pollucite

Norbergite and Pollucite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Greasy

Pleochroism

Pale yellow very pale yellow colorlessAnthony et al
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.563-1.5931.517-1.525
1 3.25
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Optic Character

-
-

Crystal System

-
Isometric

Birefringence

-9999-9999
0 0.296
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Clarity

Transparent
Transparent

Norbergite and Pollucite Optic Character

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

Norbergite and Pollucite Transparency

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