I-Cordierite iyiminerali ye-silicate, ngokuqhelekileyo i-blue blue okanye i-purple light, i-glassy luster, i-transparent to translucent.I-Cordierite nayo inophawu lokuba yi-polychromatic ephawulekayo (i-tricolor), ikhupha ukukhanya kwemibala eyahlukeneyo kwiindlela ezahlukeneyo.I-Cordierite idla ngokusikwa kwiimilo zemveli, kwaye umbala odumileyo ngumbala oluhlaza okwesibhakabhaka.