Physical-Chemical Analysis of Miter Glass Element Decoration

This paper refers to the glass elements, belonging to the XIIIth c. miter, called Saint Stanislaw from the Wawel Cathedral Museum in Krakow. The miter so-called Saint Stanislaw, has been one of small number preserve miters preserved in Europe, and only one Romanesque style bishop miter in Poland. According to decoration composition is very close to the miter of Calvo bishop (1180-1243) from Diocese Museum in Vic. There were decorative motives, created by embroidering by blue glass beads, and surrounding them by gold thread. The exposition conditions have had fundamental meaning on the miter stage. The glass elements from St. Stanislaw's miter were analyzed to solve problem of the place of the miter exposition. It was realized by estimation of glass corrosion category. Moreover, obtained data could help to confirm the hypothesis of displaying it on the altar, which was expected by the historians to their historical documentation. That kind of the XIIIth c. material analyses have never been done before.