Which character serves as an example of the theme of greed in the novel, Men of Men?

Though raised in an environment where his king is everything, and loyalty to the king is the only thing worth living or dying for, it takes little time in a white man's environment to bring greed into the picture for even this young man. Working in the mines for Zouga, Bazo and his tribesman are told that for each diamond they "free find" as they work, they will be given a sovereign. This method works quite well at first, but when Bazo finds a large diamond, word gets around quickly, and an illegal diamond buyer offers him much more for it. Conflicted by his loyalties to Zouga, Bazo finally decides on the only course of action he feels is open to him. He smashes the valuable diamond into many smaller chips, reasoning that he will get many sovereigns for them. When Zouga sees the pieces and realizes how large the diamond must have been, he almost kills Bazo, but Ralph steps between them, saving Bazo's life in an act of friendship that Bazo will reward in later years.