Book excerpt: New diamond rushes have galvanized a world which formerly thought of Africa and the Soviet Union as the significant producers of diamonds. This title highlights the scramble by investors and speculators for shares in a host of diamond prospects in Canada, Australia, Finland, Indonesia and elswhere. whether these new mines will challenge the long-running supremacy of South Africa, Namibia, Botswana and Russia as the best source of gem diamonds? They ask what would be the impact on De Beers, so long the colossus controlling the marketing of 80 per cent of gem diamonds? and The World of Gold assesses the implications on a fast-changing diamond scene.