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Wulfenite
Wulfenite

Mottramite
Mottramite



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Wulfenite
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Mottramite

Wulfenite and Mottramite Optical Properties

Optical Properties

Luster

Adamantine, Resinous
Greasy

Pleochroism

Weak
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.030.04
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

2.280-2.4052.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.1220.150
0 0.296
👆🏻

Clarity

Transparent
-

Wulfenite and Mottramite Optic Character

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

Wulfenite and Mottramite Transparency

Similar to their colors, Wulfenite 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, Wulfenite is Transparent while Wulfenite is Transparent in appearance.