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Cordierite
Cordierite

Lepidocrocite
Lepidocrocite



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X
Cordierite
X
Lepidocrocite

Cordierite and Lepidocrocite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
-

Pleochroism

X = pale yellow
Strong; X = colorless to yellow; Y = orange

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-99991.940
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
-

Cordierite and Lepidocrocite Optic Character

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

Similar to their colors, Cordierite and Lepidocrocite 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.