Design of a suitable cleaning procedure for the tarnished silver elements of the reliquary bust of Santa Vittoria, Diocesan Museum of Agrigento, Sicily

Ricotta, Nicola (Opificio delle Pietre Dure Florence, Italy) ; Degrigny, Christian (Haute Ecole Arc Conservation-Restauration, HES-SO University of Applied Sciences and arts Western Switzerland) ; Cagnini, Andrea (Opificio delle Pietre Dure Florence, Italy) ; Ortolani, Cinzia (Opificio delle Pietre Dure Florence, Italy)

The restoration of the Santa Vittoria reliquary conserved in the Diocesan Museum of Agrigento in Sicily at the Opificio delle Pietre Dure (OPD), Florence, was an opportunity to test various cleaning processes on its tarnished bust made of partly gilded silver plates. The mechanical/chemical protocols used at the OPD – calcium carbonate (CaCO3) or sodium bicarbonate (NaHCO3), and, more recently, erasers – were compared to local electrolytic cleaning techniques recently developed by the Conservation Research Unit at Haute Ecole Arc (UR-Arc CR), Neuchâtel, Switzerland. This article presents the different cleaning processes, describes the tests carried out and shows the results which led to the selection of electrolytic cleaning. As electrolytic treatments are new to OPD, the way in which these technologies have been implemented is discussed.


Keywords:
Conference Type:
full paper
Faculty:
Design et Arts visuels
Branch:
Conservation
School:
HE-Arc CR
Institute:
Unité de recherche en Conservation-restauration de la Haute Ecole Arc - UR-ARC CR
Subject(s):
Conservation - Restauration
Publisher:
Neuchâtel, Switzerland, 2-6 september 2019
Date:
2019-09
Neuchâtel, Switzerland
2-6 september 2019
Pagination:
4
Published in:
Metal 2019, 9th interim meeting of the ICOM-CC metals working group
Appears in Collection:

Note: The status of this file is: restricted


 Record created 2020-04-01, last modified 2020-04-03

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