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Coral
Coral

Labradorite
Labradorite



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Coral
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Labradorite

Coral and Labradorite Optical Properties

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Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

-
-

Dispersion

0.030.01
0.005 1
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Transparency

Translucent
Transparent, Translucent, Transparent to translucent

Refractive Index

1.486-1.6581.554-1.573
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Triclinic

Birefringence

0.160-0.1720.008-0.010
0 0.296
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Clarity

Translucent
Transparent

Coral and Labradorite Optic Character

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

Coral and Labradorite Transparency

Similar to their colors, Coral and Labradorite 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, Coral is Translucent while Coral is Translucent in appearance.