Jacob Diamond
The Jacob Diamond, also known as the Imperial or Victoria Diamond, is a colourless diamond from India (or from the Golconda mines) ranked as the fifth-biggest polished diamond in the world. The last nizam of the Hyderabad State, Mir Osman Ali Khan, found the diamond in the shoe of his father (Mahboob Ali Khan) at Chowmahalla Palace and used it as a paperweight for a long time.