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Antigorite
Antigorite

Piemontite
Piemontite



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Antigorite
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Piemontite

Antigorite and Piemontite Optical Properties

1 Optical Properties
1.1 Luster
Waxy, Silky, Resinous, Greasy
Vitreous
1.2 Pleochroism
pale greenish yellow.
visible
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Not Available
1.5 Refractive Index
1.530-1.5751.725-1.756
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
monoclinic
1.8 Birefringence
Not Available0.025-0.076
Achroite
0 0.296
1.9 Clarity
Translucent
Not Available

Antigorite and Piemontite Optic Character

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

Similar to their colors, Antigorite and Piemontite 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.