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Moonstone
Moonstone

Chalcedony
Chalcedony



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Moonstone
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Chalcedony

Moonstone and Chalcedony Optical Properties

Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
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Transparency

Transparent, Transparent to translucent
Translucent, Translucent to opaque

Refractive Index

1.518-1.5271.530-1.543
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Trigonal

Birefringence

0.006-0.0070.003-0.009
0 0.296
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Clarity

Transparent
Translucent

Moonstone and Chalcedony Optic Character

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

Similar to their colors, Moonstone and Chalcedony 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.