The Korat is a natural breed, and one of the oldest stable cat breeds, and one of the very few that has not changed its appearance throughout centuries. Originating in Phimai, Thailand, it is named after its province of origin, Nakhon Ratchasima Province (typically called "Korat" by the Thai people). In Thailand, the breed is known as "Si sawat", meaning "colour of the sawat seed". The Korat is known colloquially as the "good luck cat". Traditionally, they are given in pairs to newlyweds or people who are highly esteemed, for good luck. Until recently, Korats were not sold, but only given as gifts.