| FAQ » Cordierite - Iolite Gemstone |
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Frequently Asked Questions (FAQ) / Cordierite - Iolite |
Do you sell a gem named Cordierite?
Cordierite is one of the names used for the gemstone that we sell under the name of Iolite. A magnesium aluminum silicate with a hardness of 7 to 7.5 on the Mohs scale, Cordierite is the name most commonly used in mineralogy, while Iolite is used in gemology. The name Cordierite comes from the French geologist P. Cordier (1777-1861); the name Iolite comes from the Greek root for "violet." For more information see our Iolite Information Page.
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