Antigorite and Hibschite Optical Properties

Antigorite

Hibschite

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1 Optical Properties

1.1 Luster

Waxy, Silky, Resinous, Greasy

Vitreous

1.2 Pleochroism

pale greenish yellow.

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

Semitransparent

1.5 Refractive Index

1.530-1.575Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Translucent

TranslucentAnthony et al

Antigorite and Hibschite Optic Character

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

Similar to their colors, Antigorite and Hibschite 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.