White and Coloured Marbles of the R oman Town of U rbs S alvia ( U rbisaglia, M acerata, M arche, I taly)

Abstract

Summary The results of an archaeometric study concerning the coloured stones and 14 white marble sculptures found in the ancient city of Urbs Salvia (Urbisaglia, Macerata) – one of the main Roman archaeological sites of the Marche region (east central Italy) – are presented here. Data show the presence of the most important decorative stones used by the Romans, originating in all of the Mediterranean provinces, from Egypt and North Africa to Asia Minor, Greece, Gallia, Iberia and Italy. Thirty‐one different coloured lithotypes have been identified, including red and green porphyries as well as marmor phrygium and numidicum, namely the four most expensive stones cited in Diocletian's edict. Crustae of marmor chium, taenarium, chalcidicum, scyreticum, lucullaeum and sagarium also feature. Another significant presence is that of coloured stones that are generally rare, even in Rome and Ostia, such as cipollino mandolato (which is very abundant at Urbs Salvia, more than anywhere outside Gallia), broccatello di Spagna, alabastro a pecorella, lapis ophytes, brecciated facies of marmor iassene and cottanello antico. Worthy of mention, too, is the abundant presence of so‐called Roman breccia from Lez (Upper Garonne valley, French Pyrenees), a stone never reported outside Gallia. The 14 marble sculptures analysed come from public and private buildings of the Roman city and are now exhibited at the Archaeological Museum of Urbisaglia. Our petrographic and isotopic analyses show that they are made of Lunense (five), Pentelic (three), Parian lychnites (three), Thasian (three) and Proconnesian (one Corinthian capital) marbles. The quality of the coloured stones identified, together with the presence of sculptures made of precious imported white marble varieties, reveals an opulent town and a local patronage wishing to decorate public buildings and rich houses with the most sought‐after marbles of Rome.

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