There have been a number of crown jewels present in Korea since ancient times, spanning from the ancient Gojoseon Dynasty to the last Joseon Dynasty. Most of the regalia of these kingdoms, however, have been lost at various points in time, due to the successive rise and fall of the Korean dynasties and the subsequent and frequent raiding of Korean royal tombs and palaces by both Korean and foreign armies. The surviving regalia derive mainly from the Silla, Gaya, Baekje and Joseon dynasties.