Labradorite and Nephrite Optical Properties

Labradorite

Nephrite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Vitreous, Greasy

1.2 Pleochroism

From the Congo

None

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Translucent

1.5 Refractive Index

1.554-1.5731.600-1.627

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

monoclinic

1.8 Birefringence

0.008-0.0100.027

0 0.296

1.9 Clarity

Transparent

Translucent

Labradorite and Nephrite Optic Character

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

Similar to their colors, Labradorite and Nephrite 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.