Antigorite and Verdite Optical Properties

Antigorite

Verdite

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1 Optical Properties

1.1 Luster

Waxy, Silky, Resinous, Greasy

Vitreous, Silky

1.2 Pleochroism

pale greenish yellow.

Extreme

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

1.5 Refractive Index

1.530-1.5751.580

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Translucent

Antigorite and Verdite Optic Character

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

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Antigorite and Verdite Transparency

Similar to their colors, Antigorite and Verdite 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.