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Antigorite
Antigorite

Amblygonite
Amblygonite



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Antigorite
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Amblygonite

Antigorite and Amblygonite Optical Properties

Optical Properties

Luster

Waxy, Silky, Resinous, Greasy
Vitreous, Pearly

Pleochroism

pale greenish yellow
weak to none

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.530-1.5751.578-1.646
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

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

Birefringence

-99990.020-0.030
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Antigorite and Amblygonite Optic Character

Antigorite and Amblygonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Antigorite and Amblygonite 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 Amblygonite 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. Amblygonite has Biaxial/+ character.

Antigorite and Amblygonite Transparency

Similar to their colors, Antigorite and Amblygonite 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.