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Cordierite
Cordierite

Soapstone
Soapstone



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Cordierite
X
Soapstone

Cordierite and Soapstone Optical Properties

Optical Properties

Luster

Greasy, Vitreous
-

Pleochroism

X = pale yellow
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

-9999-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
-

Cordierite and Soapstone Optic Character

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

Similar to their colors, Cordierite and Soapstone 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.