The Oppenheimers and De Beers are no more. Here's a 30-year old article that predicted the cartel's undoing

De Beers and the Oppenheimer family, one of mining's most storied relationships, has come to an end after three generations. In March regulators gave the go-ahead to Nicky Oppenheimer (pictured in 2011) to sell his family's remaining 40% in the empire...