This granite bust is most likely a representation of one of history's most famous women, Cleopatra, and is a Royal Ontario Museum iconic object. Only three pieces of Ptolemaic sculpture like this exist in the world today. This one is on display in the Galleries of Africa: Egypt at the ROM in Toronto.
https://en.m.wikipedia.org/wiki/Royal_Ontario_Museum. The Bust of Cleopatra VII is a granite bust currently on display in the Gallery of Ancient Egypt at the Royal Ontario Museum (ROM). It is believed to have been discovered in Alexandria, Egypt at the site of Cleopatra's Sunken Palace on the island of Antirhodos.