Fig. 3
From: X-ray fluorescence analysis of three late medieval silver chalices associated with Ireland
a Comparison of the XRF spectra from gilded (orange line) and non-gilded (black line) areas of the de Burgo-O'Malley chalice knop. Au peaks have been cut for highlighting trace elements in the region of interest; b Photographic detail of the chalice knop. Boxes indicates where the XRF spectra of a gilded area (yellow box) and non-gilded area (white box) were taken; c XRF spectrum of green enamel; d XRF spectrum of blue enamel. Insets in c and d show the analyzed areas