Regalia of the Russian tsars from the 13th to the 20th centuries of the history of Russia, are the insignia of tsars and emperors of Russia. Some of the artefacts were changed or substituted, the most radical change happened in the 18th century, when Peter the Great reformed the state and transitioned it to European-style monarchy. After the Russian Revolution the great number of the Romanovs' was sold by the Bolsheviks, but the most important coronation regalia were placed in the Kremlin Armoury. Since 1967 they are displayed as a part of Diamond Fund permanent exposition. Oldest Russian regalia From the 13th up to the end of 14th century the main insignia of knyaz power were the decorated barmas and the knyaz belts. A barma is a neck-piece or a mantle made of gold, encrusted with gems and diamonds. Such treasured items were hereditary and closely connected to the knyazs' names, they were always mentioned in the wills. The Barmas Barmas of Old Ryazan were produced by masters of Old Ryazan in late 12th - early 13th century. They are one of the greatest masterpieces of ancient jewellery. The barmas belonged to the local knyaz family, but in 1237 the city was completely destroyed by Batu Khan, so the forsaken jewellery laid underground for nearly 600 years. In 1822, the royal barmas were found by archeologists and brought to the Kremlin Armory. These precious barmas are the high-craft masterpieces, enamelled and encrusted with gems. Some of the barmas have gold medallions with engravings in Greek, presumably of the Byzantine origin. The Monomakh's Cap "Cap of Monomakh" The oldest crown is the "Cap of Monomakh" or Crown of Monomakh, used in the ceremony of crowning a monarch in Russia. Its name is connected with a Russian legend of the 15th century, according to which it has been brought to Russia in ancient times as a gift from the Byzantine Emperor Constantine Monomachos. The cap is of oriental workmanship of the late 13th or early 14th century. The question of its origin is still unspecified. The oldest section of the crown consists of eight gold plates adorned with very fine gold lace in a pattern of six-pointed rosette-stars and lotus blossoms. The semi-spherical top with a cross, the sable trimming and the pearls and gemstones belong to a later period. It weighs 698 grams and is the lightest Russian crown. Since the