Chapel of the Princes at the San Lorenzo Church in Florence, by Nigetti Matteo, Giovanni de' Medici, 1604, 17th Century, dark marble, semi-precious stones, mother-of-pearl, lapis lazuli and coral. Italy, Tuscany, Florence, Chapel of the Princes at the San Lorenzo church. Sarcophagus of the Grand Duke Ferdinand I heraldic coat-of-arms: bearings: crest: ensign Medici semi-precious stones colors granite marble symbol.