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Augelite
Augelite

Cordierite
Cordierite



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X
Augelite
X
Cordierite

Augelite and Cordierite Optical Properties

Optical Properties

Luster

Pearly
Greasy, Vitreous

Pleochroism

-
X = pale yellow

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.570-1.591-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.020-0.021-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Augelite and Cordierite Optic Character

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

Augelite and Cordierite Transparency

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