Star and crescent

Symbol

The conjoined representation of a star and a crescent is used in various historical contexts, including as a prominent symbol of the Ottoman Empire, and in contemporary times, as a national symbol by some countries, and by some Muslims as a symbol of Islam, while other Muslims reject its use as an Islamic symbol. It was developed in the Greek colony of Byzantium ca. 300 BC, though it became more widely used as the royal emblem of Pontic king Mithridates VI Eupator after he incorporated Byzantium into his kingdom for a short period.

From Wikipedia, under CC BY-SA. More on occurri.