Queen Sofia of Spain wears the Cartier Diamond Loop Tiara for a gala dinner in Madrid in honor of the King of Saudi Arabia, June 2007; learn more about the tiara’s history over here!

Queen Sofia of Spain wears the Niarchos Ruby Bandeau and its accompanying jewels for a gala dinner in Madrid in honor of President Sarkozy of France, April 2009; more on the suite here!

Queen Sofia of Spain wears her diamond floral tiara for an official dinner in honor of President Kwasniewski of Poland, September 2003; learn more about the heirloom tiara here!