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Pyrophyllite
Pyrophyllite

Gedrite
Gedrite



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Pyrophyllite
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Gedrite

Pyrophyllite and Gedrite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Fibrous, Vitreous
1.2 Pleochroism
NilArthur Thomas
Weak to moderate
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.534-1.6011.625-1.718
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.8 Birefringence
0.050Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Pyrophyllite and Gedrite Optic Character

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

Pyrophyllite and Gedrite Transparency

Similar to their colors, Pyrophyllite and Gedrite 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, Pyrophyllite is Translucent while Pyrophyllite is Translucent in appearance.