(née Harvey), widow of Sir Michael, 2nd Baronet Oppenheimer of Stoke Poges. He died in Johannesburg in 1957. Although he was born into a Jewish family, he converted to Anglicanism in adulthood and was buried at St George's Church, Parktown. He was succeeded in the business by his son, Harry Oppenheimer. Oppenheimer's brother, Sir Bernard Oppenheimer, was also heavily involved in the diamond industry, himself dying in 1921. Legacy In 1964, the Oppenheimer Diamond was named in his honour by its owner, Harry Winston, who donated the stone (not a gem, as it remains uncut and unpolished) to the Smithsonian Institution as a memorial. See also Economy of South Africa Mining industry of South Africa Gustav Imroth Joel family Cecil Rhodes References External links Sir Ernest Oppenheimer - South African History Online History of Sir Ernest beginnings @ De Beers Biography Ernest Oppenheimer online version Gregory, Ernest Oppenheimer and the Economic Development of South Africa, Cape Town University Press, New York, 1965 1880 births 1957 deaths People from Friedberg, Hesse People from the Grand Duchy of Hesse Ernest 19th-century German Jews German emigrants to South Africa South African Anglicans Converts to Anglicanism from Judaism South African mining businesspeople Diamond dealers 20th-century South African businesspeople Knights Bachelor Knights of the Order of Saint John (chartered 1888) South African knights De Beers people