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Antigorite
Antigorite

Anthophyllite
Anthophyllite



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Antigorite
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Anthophyllite

Antigorite and Anthophyllite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Waxy, Silky, Resinous, Greasy
pale greenish yellow
0.02
Translucent
1.530-1.575
-
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
-9999
Translucent
 
Vitreous, Pearly
-
0.01
Transparent
1.603-1.690
Biaxial/+
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
-9999
Transparent

Antigorite and Anthophyllite Optic Character

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

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