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Friedelite
Friedelite

Pyrite
Pyrite



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Friedelite
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Pyrite

Friedelite and Pyrite Optical Properties

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Optical Properties

Luster

-
-

Pleochroism

-
-

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

Translucent
OpaqueHerve Nicolas Lazzarelli

Refractive Index

1.627-1.663-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
Isometric

Birefringence

0.032-0.035-9999
0 0.296
👆🏻

Clarity

Translucent
OpaqueHerve Nicolas Lazzarelli

Friedelite and Pyrite Optic Character

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

Friedelite and Pyrite Transparency

Similar to their colors, Friedelite and Pyrite 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, Friedelite is Translucent while Friedelite is Translucent in appearance.