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Pollucite
Pollucite

Montebrasite
Montebrasite



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Pollucite
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Montebrasite

Pollucite and Montebrasite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
-

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
TransparentWalter Schumann

Refractive Index

1.517-1.5251.578-1.646
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
-

Birefringence

-99990.020-0.030
0 0.296
👆🏻

Clarity

Transparent
TransparentWalter Schumann

Pollucite and Montebrasite Optic Character

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

Similar to their colors, Pollucite and Montebrasite 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.