About

Hi! My name is Theresa (Terri) Costello and I am the conservator behind Costello Conservation. I am originally from New Hampshire in the United States but have lived in Europe for almost ten years. I have expertise in the conservation and restoration of glass and ceramic cultural heritage, as well as similar materials such as plaster, enamels, and Egyptian faience. I have specific interest in glass, and have dedicated much of my time to researching the material and how to best preserve it.

In 2019 I earned a Bachelors degree in Ancient History and Archaeology with a minor in History at Trinity College Dublin in Ireland. During my time studying archaeology I participated in archaeological excavations in Ireland and Italy. It was through these hands on experiences with excavated artefacts that I realised my passion for preserving the past.

I moved to the Netherlands to study Conservation and Restoration of Cultural Heritage at the University of Amsterdam. I completed the Masters of Science programme in 2021, and then the post-Masters Advanced Professional Programme in 2023.

During my studies, I gained theoretical and practical knowledge on the conservation of glass and ceramic objects. This included individual treatments of objects ranging from a Ming Dynasty stoneware funerary vase to a modern fused glass artwork.

My MSc thesis was an investigation into a cracking phenomenon found on 17th-18th century Dutch Glass post horns, which was awarded the 2021 Rijksmuseum Migelien Gerritzen thesis award.

I have also completed internships at the Allard Pierson in Amsterdam and the Corning Museum of Glass in the United States.

I have presented my research at multiple conferences both in the Netherlands and abroad. And hope to continue to contribute to the knowledge and preservation of cultural heritage.

You can see this presentation at the GLAS2023 conference by clicking here (0:37:20)