The emperor's gem methodology, recovery, micro-excavation of a semiprecious stone ornament from the imperial sarcophagus of Frederick II - Lombardo, Angela; Vidale, Massimo 1956- (2023)
Keywords: Friedrich -- II. -- Heiliges Römisches Reich, Kaiser -- 1194-1250; Sarg; Restaurierung; Zirkon; Grabmal; Dom Palermo -- Palermo