Diamond Rock is a 175-metre-high basalt island located south of "Grande Anse du Diamant" before arriving from the south at Fort-de-France, the main port of the Caribbean island of Martinique. The uninhabited island is about 3 kilometres 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. It is notable for events during the Napoleonic Wars.
Coordinates 14°26'35" N -61°2'20" E