In 1304, Charles II of Anjou commissioned the Reliquary bust of San Gennaro which is still found in the Chapel today, as an ex voto to celebrate the sanctioned peace with the Aragonese.

The bust cost a good 6,732 lilies! To make it happen, Charles II had some trusted goldsmiths arrive from France who gave birth to a real court atelier and formed the first nucleus of what with Joan of Anjou, almost eighty years later, would become the Guild of Goldsmiths based in the bell tower of Sant'Eligio, the heart of the Borgo degli Orefici.

The miter was commissioned by the Deputation to the Neapolitan goldsmith Matteo Treglia to decorate the bust of the Patron Saint during the procession.

To carry out the work, the Deputation made numerous stones and precious objects available, but the goldsmith decided to mount only diamonds, rubies and emeralds on the miter following the religious symbolism associated with the stones: the unassailable faith of diamonds, the charity of rubies and the hope of the emeralds.

The Miter is in gilded silver and for its complex design Treglia was inspired by the embroidery on fabric typical of the miters worn by Bishops. In total, he set 3326 diamonds, 198 emeralds and 168 rubies, for a total weight of 18 kg!

The necklace of San Gennaro is an object of inestimable value that collects gifts from kings, queens and devotees and tells 250 years of European history in Naples.