orichalcum /ɒɹɪˈkælkəm/ noun1 •A valuable yellow metal known to the Ancient Greeks and Romans; now sometimes interpreted as referring to a natural alloy of gold and copper, and sometimes treated as a mythical substance.Many walls were coated with metals – with brass, tin and a red ^([sic]) metal, unknown to us, called orichalcum. — 2008
