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Smithsonite
Smithsonite

Montebrasite
Montebrasite



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Smithsonite
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Montebrasite

Smithsonite and Montebrasite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Translucent
TransparentWalter Schumann

Refractive Index

1.620-1.8501.578-1.646
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
-

Birefringence

0.223-0.2270.020-0.030
0 0.296
👆🏻

Clarity

Translucent
TransparentWalter Schumann

Smithsonite and Montebrasite Optic Character

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

Smithsonite and Montebrasite Transparency

Similar to their colors, Smithsonite 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, Smithsonite is Translucent while Smithsonite is Translucent in appearance.