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Sellaite
Sellaite

Pollucite
Pollucite



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Sellaite
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Pollucite

Sellaite and Pollucite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Greasy

Pleochroism

-
-

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.378-1.3901.517-1.525
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Isometric

Birefringence

0.012-9999
0 0.296
👆🏻

Clarity

Transparent
Transparent

Sellaite and Pollucite Optic Character

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

Sellaite and Pollucite Transparency

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