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Pyrope
Pyrope

Riebeckite
Riebeckite



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Pyrope
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Riebeckite

Pyrope and Riebeckite Optical Properties

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Optical Properties

Luster

Greasy, Vitreous
Vitreous, Silky

Pleochroism

None
X = blue

Dispersion

0.020.02
0.005 1
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Transparency

-
-

Refractive Index

1.720-1.7561.680-1.698
1 3.25
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Optic Character

-
-

Crystal System

cubic
monoclinic

Birefringence

-99990.005-0.008
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Pyrope and Riebeckite Optic Character

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

Pyrope and Riebeckite Transparency

Similar to their colors, Pyrope and Riebeckite 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, Pyrope is while Pyrope is in appearance.