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Pyrophyllite
Pyrophyllite

Sphalerite
Sphalerite



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Pyrophyllite
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Sphalerite

Pyrophyllite and Sphalerite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Adamantine
1.2 Pleochroism
NilArthur Thomas
AbsentWalter Schumann
1.3 Dispersion
NA0.16
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent, Translucent
1.5 Refractive Index
1.534-1.6012.368-2.371
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Isometric
1.8 Birefringence
0.050Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Pyrophyllite and Sphalerite Optic Character

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

Similar to their colors, Pyrophyllite and Sphalerite 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.