The Płock Diadem (Polish: Diadem płocki) is a reliquary crown held in the city of Płock, in central Poland. It was created in the beginning of the 13th century[1] probably in Hungary and was brought to Poland in the Middle Ages. This filigree diadem is wrought of extremely pure gold and set with sapphires, rubies, almandines and pearls.[2][3]
In 1601 by order of King Sigismund III Vasa the diadem was placed by a goldsmith Stanisław Zemelka on reliquary of St. Sigismund (patron saint of the King, also kept in the Masovian Blessed Virgin Mary Cathedral in Płock). This reliquary takes the form of a bust and it was established by King Casimir III the Great in the 14th century to comprise relics of that saint.[4] The reliquary was made in Kraków between 1351–1356 and it depicts the King.[1]
The reliquary was looted by the Germans during World War II, and later reclaimed.[3]
^Na Hermie znajduje się diadem piastowski z XIII w., ozdobiony szafirami, rubinami i perłami."Płock: uroczystości Zygmuntowskie ku czci patrona miasta". www.tp.com.pl (in Polish). KATOLICKA AGENCJA INFORMACYJNA. 2009-05-03. Retrieved 2009-05-04.