Labradorite and Antigorite Optical Properties

Labradorite

Antigorite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

From the Congo

pale greenish yellow.

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Translucent

1.5 Refractive Index

1.554-1.5731.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

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

1.8 Birefringence

0.008-0.010Not Available

0 0.296

1.9 Clarity

Transparent

Translucent

Labradorite and Antigorite Optic Character

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

Similar to their colors, Labradorite and Antigorite 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, Labradorite is Translucent, Transparent and Transparent to translucent while Labradorite is Translucent, Transparent and Transparent to translucent in appearance.