Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of cordierite is as below...

Iolite :: Iolite (n.) A silicate of alumina, iron, and magnesia, having a bright blue color and vitreous luster; cordierite. It is remarkable for its dichroism, and is also called dichroite..

Cordierite :: Cordierite (n.) See Iolite.

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