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Wulfenite
Wulfenite

Zoisite
Zoisite



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X
Wulfenite
X
Zoisite

Wulfenite and Zoisite Optical Properties

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Optical Properties

Luster

Adamantine, Resinous
Vitreous

Pleochroism

Weak
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green

Dispersion

0.030.02
0.005 1
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Transparency

Transparent
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

2.280-2.4051.685-1.707
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.1220.006-0.018
0 0.296
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Clarity

Transparent
Transparent

Wulfenite and Zoisite Optic Character

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

Similar to their colors, Wulfenite and Zoisite 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.