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Cordierite
Cordierite

Adamite
Adamite



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X
Cordierite
X
Adamite

Cordierite and Adamite Optical Properties

Optical Properties

Luster

Greasy, Vitreous
Vitreous

Pleochroism

X = pale yellow
-

Dispersion

0.010.06
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

-99991.708-1.722
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Orthorhombic
Orthorhombic

Birefringence

-99990.031-0.050
0 0.296
👆🏻

Clarity

-
Transparent

Cordierite and Adamite Optic Character

Cordierite and Adamite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cordierite and Adamite 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 Adamite 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. Adamite has Biaxial/+ character.

Cordierite and Adamite Transparency

Similar to their colors, Cordierite and Adamite 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.