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Montebrasite
Montebrasite

Omphacite
Omphacite



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Montebrasite
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Omphacite

Montebrasite and Omphacite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak: colorless -- very pale green -- very pale green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
TranslucentAnthony et al

Refractive Index

1.578-1.6461.662-1.723
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
-

Birefringence

0.020-0.030-9999
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
TranslucentAnthony et al

Montebrasite and Omphacite Optic Character

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

Montebrasite and Omphacite Transparency

Similar to their colors, Montebrasite and Omphacite 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, Montebrasite is TransparentWalter Schumann while Montebrasite is TransparentWalter Schumann in appearance.