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Pearl
Pearl

Pyrite
Pyrite



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Pearl
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Pyrite

Pearl and Pyrite Optical Properties

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1 Optical Properties
1.1 Luster
Pearly
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
NoneNone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Opaque
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.52-1.66Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Isometric
1.8 Birefringence
0.156Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
OpaqueHerve Nicolas Lazzarelli

Pearl and Pyrite Optic Character

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

Pearl and Pyrite Transparency

Similar to their colors, Pearl 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, Pearl is Opaque and Translucent while Pearl is Opaque and Translucent in appearance.