Cosimo II de' Medici

Cosimo II de' Medici served as the Grand Duke of Tuscany during the early 17th century. He played a pivotal role in the patronage of arts and sciences during the Renaissance. His acquisition of the Florentine diamond, which he entrusted to a Venetian cutter for its transformation, underscores his influence in the world of fine jewelry and his family's legacy in Tuscany.