The Koh-i-Noor diamond, otherwise known as the Mountain of Light, is worth around #100 million, and according to the British Monarchy has “legendary” status within their collection of Crown jewels. Set in the Queen Mother’s platinum crown for her 1937 coronation, it’s a dazzling symbol of the Royal Family and its history. But there’s a catch - India wants it back. A collection of Indian businessmen and Bollywood actors have begun legal proceedings to have the diamond returned home.