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Pyrope
Pyrope

Rubellite
Rubellite



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Pyrope
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Rubellite

Pyrope and Rubellite Optical Properties

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Optical Properties

Luster

Greasy, Vitreous
-

Pleochroism

None
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
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Transparency

-
Transparent, Translucent

Refractive Index

1.720-1.7561.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

cubic
-

Birefringence

-99990.014-0.040
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Pyrope and Rubellite Optic Character

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

Pyrope and Rubellite Transparency

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