An important part of the objects used in the liturgy (sculptures, châsses, candlesticks, covers of books, croziers, etc.) were made in bronze or copper, often over a wooden core. These objects were gilded and decorated with enamel using the champlevé technique (which consists of making cavities in the metal and later filling them with enamel). These 12th- and 13th-century works belong to a significant production from which manufacturers like those in Limoges (or Silos, to a lesser extent) stand out, the works of which were very widespread. However, other works may come from local workshops. Apart from floral and geometrical decoration, themes such as the Christ in Majesty, figures of angels and apostles, or key scenes from the life of Christ and certain saints also appear.