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Moonstone
Moonstone

Pyrope
Pyrope



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Moonstone
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Pyrope

Moonstone and Pyrope Optical Properties

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Optical Properties

Luster

Pearly
Greasy, Vitreous

Pleochroism

-
None

Dispersion

0.010.02
0.005 1
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Transparency

Transparent, Transparent to translucent
-

Refractive Index

1.518-1.5271.720-1.756
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
cubic

Birefringence

0.006-0.007-9999
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Moonstone and Pyrope Optic Character

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

Similar to their colors, Moonstone and Pyrope 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.