Green porphyry, gold and micromosaic snuff box

Green porphyry, gold and micromosaic snuff box
octagonal body, gold frame and closure, lid centered by a roman micromosaic plaque on copper depicting the "Tempio di Vesta e la cascata di Tivoli" Literature: Anna Maria Massinelli, "Giacomo Raffaelli, maestro di stile e di mosaico" - D. Petochi, i mosaici minuti romani , 3x9,5x5 cm.