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Pyrite
Pyrite

Sunstone
Sunstone



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Pyrite
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Sunstone

Pyrite and Sunstone Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
Weak or absentWalter Schumann

Dispersion

0.040.01
0.005 1
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Transparency

OpaqueHerve Nicolas Lazzarelli
Transparent, Translucent, Transparent to translucent

Refractive Index

-99991.53-1.55
1 3.25
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Optic Character

-
-

Crystal System

Isometric
Triclinic

Birefringence

-99990.007-0.010
0 0.296
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Clarity

OpaqueHerve Nicolas Lazzarelli
Transparent to translucent

Pyrite and Sunstone Optic Character

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

Similar to their colors, Pyrite and Sunstone 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.