Red Diamonds by MCCARTHY, Justin

In the South African wilderness, six men got together to mine for diamonds and become very rich. They agree that the wealth is to be split equally between them or their heirs after a few years and that the share of any one who died without leaving an heir or whose heir died before the time would be split between the remaining partners. Soon, all heirs are notified and wait expectantly for the first of January, on which the diamonds are to be divided between the partners. However, the diamonds are becoming increasingly blood stained, and January the first is still some time off... (Summary by Carolin)