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Pyrite
Pyrite

Zoisite
Zoisite



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Pyrite
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Zoisite

Pyrite and Zoisite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

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

Dispersion

0.040.02
0.005 1
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Transparency

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

Refractive Index

-99991.685-1.707
1 3.25
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Optic Character

-
-

Crystal System

Isometric
Orthorhombic

Birefringence

-99990.006-0.018
0 0.296
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Clarity

OpaqueHerve Nicolas Lazzarelli
Transparent

Pyrite and Zoisite Optic Character

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

Pyrite and Zoisite Transparency

Similar to their colors, Pyrite 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, Pyrite is OpaqueHerve Nicolas Lazzarelli while Pyrite is OpaqueHerve Nicolas Lazzarelli in appearance.