BRACELET made up of six oval medallions in micro-mosaic on black onyx, mounted in gold. The monuments represented are Saint Peter's Square and Basilica in Rome, the Temple of Vestas, the Colosseum, the Pantheon, the Temple of Vespasian and perhaps the Plautii tomb. Gold mounting, Hibou hallmark on clasp. First half of the 19th century. Length 16.5 cm. A few accidents and repairs. Of Roman origin, these jewels were brought back during the "Grand Tour", a voyage of initiation undertaken by young people (artists or art lovers) from the European bourgeoisie. These objects were produced from the end of the 18th century to the end of the 19th century.