At a private celebratory dinner, Roxton reveals to the others that the blue clay contained diamonds – he had been tipped off to the possibility, by the recollection of a similar feature in South Africa – and that he managed to extract about £200,000 worth, which is to be split between them, Challenger plans to open a private museum with his share, Summerlee plans to retire and categorise fossils. Malone returns to his love, Gladys, hoping she will recognise his achievements. Instead, he finds she has now selfishly changed her mind and married a very ordinary man instead, an insignificant clerk. Astonished at this turn of events, and with nothing to keep him in London, he decides to accompany Roxton back to the lost world.