The fourteen nave arcade columns are very mixed, and are of dfferent lengths. Some are cracked, and so have metal jackets. Three of the columns are of pink granite from Aswan in Egypt, three are marmor imezio which is from Mount Hymettus near Athens, three are grey bigio antico marble from Algeria, three are grey granite from Egypt, one is pink marmor chium from Chios in Greece, and one is cipollino marble from Euboea in Greece. The near and far columns in the left hand arcade have capitals that are not Ionic; one is Corinthian, and the other Composite.