The discovery of a diamond in a Johannesburg street triggers a series of events that expose the fragile social and moral structures of the characters involved. The protagonist, Gottlieb, finds himself entangled in a web of suspicion and greed after the stone is found, forcing him to confront his own integrity and the shifting loyalties of his associates. Opposing him are the pressures of a society defined by racial tension and economic disparity, which act as a constant, looming constraint on his choices. The narrative utilizes a third-person perspective to examine the psychological fallout of the incident, maintaining a focus on the internal conflicts of the characters as they navigate their precarious environment.

Readers and critics often observe that the work functions as a sharp critique of the social climate in mid-century South Africa. Discussion frequently centers on the author's ability to maintain a sense of unease without relying on traditional thriller tropes. Many highlight the focus on character development, noting that the diamond serves primarily as a catalyst for revealing the underlying flaws of the cast. The prose is described as measured and precise, providing a clear window into the complexities of human behavior under pressure.