Rocca is the oldest family who masters goldsmiths in Sardinia, with as many as six generations of filigree craftsmen. Nanni and his son Pierluigi create refined jewelry, unique pieces made by hand, a fruit of a tradition handed down in the family. From their historical research was born the traveling exhibition "Prendas contra s'ogu malu®", which illustrates the history of Sardinian superstitious jewel, and has been exhibited for more than twenty years in Italy and abroad. Rocca Prendas creations can be seen in four museums in Sardinia. Rocca Prendas goldsmith's workshop has created unique pieces for three Presidents of the Italian Republic, for the Holy Pope John Paul II and for important personalities of the showbusiness.