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Williamsite
Williamsite

Mottramite
Mottramite



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Williamsite
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Mottramite

Williamsite and Mottramite Optical Properties

Optical Properties

Luster

Waxy, Silky, Resinous, Greasy
Greasy

Pleochroism

-
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

TranslucentHerve Nicolas Lazzarelli
-

Refractive Index

1.530-1.5752.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.150
0 0.296
👆🏻

Clarity

TranslucentHerve Nicolas Lazzarelli
-

Williamsite and Mottramite Optic Character

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

Williamsite and Mottramite Transparency

Similar to their colors, Williamsite and Mottramite 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, Williamsite is TranslucentHerve Nicolas Lazzarelli while Williamsite is TranslucentHerve Nicolas Lazzarelli in appearance.