I-Cordierite iyiminerali ye-silicate, ngokuvamile eluhlaza okwesibhakabhaka noma onsomi okhanyayo, i-glassy luster, esobala kuya ekukhanyeni.I-Cordierite iphinde ibe nesici sokuba yi-polychromatic (tricolor) ngokuphawulekayo, ikhipha ukukhanya kwemibala ehlukene ngezindlela ezihlukene.I-Cordierite ivame ukusikwa ibe yizimo zendabuko, futhi umbala odume kakhulu uhlaza okwesibhakabhaka-nsomi.