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Montebrasite
Montebrasite

Willemite
Willemite



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Montebrasite
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Willemite

Montebrasite and Willemite Optical Properties

Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.020.17
0.005 1
👆🏻

Transparency

TransparentWalter Schumann
Transparent, Translucent

Refractive Index

1.578-1.6461.687-1.723
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

0.020-0.0300.028-0.030
0 0.296
👆🏻

Clarity

TransparentWalter Schumann
Transparent

Montebrasite and Willemite Optic Character

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

Similar to their colors, Montebrasite and Willemite 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.