Cameo with portraits of Cosimo I de' Medici, Eleonor of Toledo, and their children (1558–1562) Carved from a massive, multi-layered agate by Italian master Giovanni Antonio de' Rossi (1513–after 1575), this masterpiece of Mannerist luxury stands as a premier example of Renaissance glyptic art. Commissioned by Cosimo I de' Medici, Duke of Florence, the cameo profiles the ruler alongside his wife, Eleonor of Toledo, and five of their sons.























