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<p>The Chiaravalle Cross, an ancient Italian processional cross from Chiaravalle Abbey (near Milan, Italy), is a jewellery masterpiece richly decorated with precious metals applied by combining different metalworking techniques like chiselling, engraving, gilding by laminas and amalgams. In particular, a golden filigree adorns the entire cross. A very small portion of this filigree has been made available for analyses, after the restoration in 2016. The filigree has a multi-component structure, made of drawn and after twisted silver wires, soldered and finally gilded. A neutron tomography imaging experiment has been carried out to disclose the three-dimensional structure of the ancient golden decoration for a comparison with two-dimensional results obtained by a previous SEM (scanning electron microscopy) investigation to demonstrate the potential of a non-invasive technique for a comprehensive understanding of the manufacturing technique.</p>

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High resolution neutron tomography as non-invasive tool for the study of a filigree from the Medieval Chiaravalle Cross

  • 期刊论文

  • 发表日期：

    2025年6月7日

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  • Luisa Vigorelli,
  • Filomena Salvemini,
  • Giulia Marcucci,
  • Costanza Cucini,
  • Daniela Di Martino,
  • Maria Pia Riccardi

摘要

The Chiaravalle Cross, an ancient Italian processional cross from Chiaravalle Abbey (near Milan, Italy), is a jewellery masterpiece richly decorated with precious metals applied by combining different metalworking techniques like chiselling, engraving, gilding by laminas and amalgams. In particular, a golden filigree adorns the entire cross. A very small portion of this filigree has been made available for analyses, after the restoration in 2016. The filigree has a multi-component structure, made of drawn and after twisted silver wires, soldered and finally gilded. A neutron tomography imaging experiment has been carried out to disclose the three-dimensional structure of the ancient golden decoration for a comparison with two-dimensional results obtained by a previous SEM (scanning electron microscopy) investigation to demonstrate the potential of a non-invasive technique for a comprehensive understanding of the manufacturing technique.