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Cordierite
Cordierite

Pyrope
Pyrope



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Cordierite
X
Pyrope

Cordierite and Pyrope Optical Properties

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Optical Properties

Luster

Greasy, Vitreous
Greasy, Vitreous

Pleochroism

X = pale yellow
None

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.720-1.756
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
cubic

Birefringence

-9999-9999
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Cordierite and Pyrope Optic Character

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

Cordierite and Pyrope Transparency

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