Fig. 2
From: X-ray fluorescence analysis of three late medieval silver chalices associated with Ireland
a Representative XRF spectrum of gilded areas (taken on the knop) of the Ó Learghusa chalice; b Representative XRF spectrum of non-gilded areas of the knop, the base, and the bowl of the chalice; c Comparison of XRF spectra from gilded (orange line) and non-gilded (black line) areas. Au peaks have been cut for highlighting trace elements in the region of interest; d Photographic detail of the deterioration of the gilding layer