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Pyrophyllite
Pyrophyllite

Prasiolite
Prasiolite



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Pyrophyllite
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Prasiolite

Pyrophyllite and Prasiolite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Vitreous
1.2 Pleochroism
NilArthur Thomas
Very weak: light green pale greenWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Translucent
1.5 Refractive Index
1.534-1.6011.544-1.553
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.0500.009
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Pyrophyllite and Prasiolite Optic Character

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

Similar to their colors, Pyrophyllite and Prasiolite 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.