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Ludlamite
Ludlamite

Zincite
Zincite



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Ludlamite
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Zincite

Ludlamite and Zincite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Subadamantine, Resinous

Pleochroism

-
Very weak

Dispersion

0.020.16
0.005 1
👆🏻

Transparency

-
TransparentRobert C. Kammerling

Refractive Index

1.653-1.6932.013-2.029
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.038-0.0440.016
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentRobert C. Kammerling

Ludlamite and Zincite Optic Character

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

Similar to their colors, Ludlamite and Zincite 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.