Antonio Stradivari (/ˌstrædɪˈvɑːri/, also US: /-ˈvɛəri/, Italian: [anˈtɔːnjo stradiˈvaːri]; 1644 – 18 December 1737) was an Italian luthier and a craftsman of string instruments such as violins, cellos, guitars, violas and harps. The Latinized form of his surname, Stradivarius, as well as the colloquial Strad are terms often used to refer to his instruments. It is estimated that Stradivari produced 1,116 instruments, of which 960 were violins. Around 650 instruments survived, including 450 to 512 violins.