King Bhumibol Adulyadej celebrated his Golden Jubilee on 9 June 1996, having acceded to the throne in 1946. (Thailand's longest-reigning monarch). The largest faceted diamond in the world known as the Golden Jubilee Diamond was purchased as a gift for King Bhumibol Adulyadej on the 50th anniversary of his coronation by Thai businessmen.[2] Currently, the diamond is located in the Royal Thai Palace as part of the crown jewels. In 1996,