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Ludlamite
Ludlamite

Montebrasite
Montebrasite



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Ludlamite
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Montebrasite

Ludlamite and Montebrasite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
TransparentWalter Schumann

Refractive Index

1.653-1.6931.578-1.646
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.038-0.0440.020-0.030
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentWalter Schumann

Ludlamite and Montebrasite Optic Character

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

Ludlamite and Montebrasite Transparency

Similar to their colors, Ludlamite 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, Ludlamite is while Ludlamite is in appearance.