Visitors look at the Necklace of St. Januarius, made in 1679 by goldsmith Michele Dato, on display as part of the exhibition "Naples' Treasure. Masterpieces from the Museum of Saint Januarius", at the Fondazione Roma Museum, in Rome's Palazzo Sciarra, Wednesday, Oct. 30, 2013. The necklace is one of the most precious pieces on the exhibition. (AP Photo/Andrew Medichini)