A gripping account of the cartel, warlords, gun runners and shadowy traders who populated Africa's bloody diamond wars, and the faltering, decade-long effort to clean up an entire industry.

Africa’s diamond wars took four million lives. ‘Blood on the Stone’ tells the story of how diamonds came to be so dangerous, describing the great diamond cartel and a dangerous pipeline leading from war-torn Africa to the glittering showrooms of Paris, London and New York. It describes the campaign that forced an industry and more than 50 governments to create a global control mechanism, and it provides a sobering prognosis on its future.