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Moonstone
Moonstone

Rubellite
Rubellite



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Moonstone
X
Rubellite

Moonstone and Rubellite Optical Properties

Optical Properties

Luster

Pearly
-

Pleochroism

-
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
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Transparency

Transparent, Transparent to translucent
Transparent, Translucent

Refractive Index

1.518-1.5271.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.006-0.0070.014-0.040
0 0.296
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Clarity

Transparent
Transparent

Moonstone and Rubellite Optic Character

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

Moonstone and Rubellite Transparency

Similar to their colors, Moonstone and Rubellite 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.