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Antigorite
Antigorite

Pyrophyllite
Pyrophyllite



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Antigorite
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Pyrophyllite

Antigorite and Pyrophyllite Optical Properties

Optical Properties

Luster

Waxy, Silky, Resinous, Greasy
Pearly

Pleochroism

pale greenish yellow
-

Dispersion

0.020.05
0.005 1
👆🏻

Transparency

Translucent
Translucent

Refractive Index

1.530-1.5751.534-1.601
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Domatic H-M Symbol (m) Space Group: Cm
-

Birefringence

-99990.050
0 0.296
👆🏻

Clarity

Translucent
Translucent

Antigorite and Pyrophyllite Optic Character

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

Antigorite and Pyrophyllite Transparency

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