Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires.
Giuliani was born on May 28, 1944, in the East Flatbush section of Brooklyn, New York City, which at the time of his birth was a largely Italian American enclave of Brooklyn.