Diamond Rock (Rocher du Diamant) is a 175 meter (574 feet) high basalt island located south of Fort-de-France, the main port of the Caribbean island of Martinique. The uninhabited island is about three kilometers from Pointe Diamant. The island gets its name from the reflections that its sides cast at certain hours of the day, which evoke images of a precious stone. Its claim to fame is the role that it played in the Napoleonic Wars.