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Ludlamite
Ludlamite

Vesuvianite
Vesuvianite



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Ludlamite
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Vesuvianite

Ludlamite and Vesuvianite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous, Resinous

Pleochroism

-
slight in colored varieties

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.653-1.6931.703-1.752
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
tetragonal

Birefringence

0.038-0.0440.004-0.006
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Ludlamite and Vesuvianite Optic Character

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

Similar to their colors, Ludlamite and Vesuvianite 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.