Asked by madluna on Mon 17, Jul 2017 03:06am :
Chlidrens book from 1960/70s
young boy goes to boarding school and boasts his farther has a dimond as
big as mManhatten. Pupils from school go to visit in holidays and its true
the whole island is a diamond. But once there that can not return so are
imprisoned as are others such as pilots who flew over the island and
survayors who noted its existance during map making.
The family release large diamonds whith history when they need money
assume the boy escapes eventually. Read to us in primary school 1970., but
could have been an adult book.