A Grand Tour micromosaic brooch, depicting scenery from the Colosseum in Rome, set on an oval black hardstone panel, framed in with an Etruscan-styled border with wirework and bead details, in bloom finished yellow metal, fitted with tube hinged pin stem and C-catch, unmarked, approximately measures 5.2 x 4.3 cm, total weight of item 27.8 grams.