Diamond as Big as the Ritz

When sixteen years John T. Unger leaves for a vacation with a wealthy school mate of his, he doesn't know yet what he is about to encounter. His school friend's family is not only rich; they are 'rich rich' - and the family has decided to build a house inside a giant diamond. As if the giand diamond would not be enough, soon John is in the middle of unexpected and thrilling events. 'The Diamond as Big as the Ritz' is F. Scott Fitzgerald's novella published in 1920.-