An open pit with working machines and trucks. Mining (Supplied) The diamond mining sector is facing one of its toughest periods, with falling global demand and weaker diamond prices thanks to the rise of lab-grown alternatives. To discuss the dynamics at play and their impact on producers, Business Day TV caught up with mining analyst Peter Major from Modern Corporate Solutions.Would you like to comment on this article?Sign up (it's quick and free) or sign in now.Please read our Comment Policy before commenting.