The crowns of Silla are noted for their exquisite gold and jade workmanship, which resulted from the spread of goldsmithing technologies from Egypt and Mesopotamia to Korea via the Silk Road. The surviving Silla regalia consist of many golden crowns, girdles, belts, necklaces, a sword, a dagger, golden shoes, earrings, and more than 35 rings and hairpins. However, the Silla custom was that every king and queen had their own set of regalia, hence the regalia for each monarch was buried with them in their tombs, warranting the creation of many different regalia depending on personal preferences, contemporary fashion and available goldsmithing technology.