A town of South Africa in Griqualand West, about 3 m. S.W. of Kimberley, of which it is practically a suburb, though possessing a separate municipality. Pop. (1904) 9378, of whom 2780 were whites. Beaconsfield was founded in 1870 near the famous Dutoitspan diamond mine. The land on which the town is built belongs to the De Beers Company. (See KIMBERLEY.)