Labradorite and Andradite Garnet Optical Properties

Labradorite

Andradite Garnet

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Adamantine

1.2 Pleochroism

From the Congo

Not Available

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Transparent, Opaque, Transparent to opaque

1.5 Refractive Index

1.554-1.5731.888-1.889

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

Isometric

1.8 Birefringence

0.008-0.010Not Available

0 0.296

1.9 Clarity

Transparent

Transparent to opaque

Labradorite and Andradite Garnet Optic Character

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

Similar to their colors, Labradorite and Andradite Garnet 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.