Analytical study of the azulejos from Igreja da Graça in Lisbon, signed by João de Góis

Abstract

After the panels of Capela de São Roque in Lisbon, signed and dated, the incomplete and dispersed panels in Igreja da Graça are the second set of signed Renaissance azulejos produced in Lisbon that were found. A selection of azulejo units from the panels has now been studied by scanning-electron microscopy coupled with energy-dispersive spectrometry (SEM-EDS). The tiles making up the book bearing the signing monogram have been used to establish a morphological and analytical template aimed at identifying in the future a common officinal provenance in azulejos of the same general chronology known or presumed to have been produced in Lisbon. This communication reports the results of the analytical study identifying the main micro-morphological features and the composition variations.