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Cordierite
Cordierite

Parisite
Parisite



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Cordierite
X
Parisite

Cordierite and Parisite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
-

Pleochroism

X = pale yellow
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.671-1.771
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

-99990.099-0.100
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Cordierite and Parisite Optic Character

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

Similar to their colors, Cordierite and Parisite 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.