A precise etching by Jules Ferdinand Jacquemart depicting the ornate clasp of the royal mantle of Saint-Louis, rendered with exceptional technical detail.

This etching by Jules Ferdinand Jacquemart depicts the agrafe, or clasp, of the royal mantle of Saint-Louis. Jacquemart was a master of the etching medium, particularly noted for his ability to render the textures of metal, gemstones, and enamel with scientific precision. This work originates from his contributions to the documentation of historical decorative arts, a field in which he excelled during the mid-nineteenth century.

The composition presents the diamond-shaped clasp in a central, isolated position against a neutral background. The fleur-de-lis motif is clearly visible, constructed from a framework of precious stones and metalwork. Jacquemart employs a refined etching technique to differentiate between the reflective surfaces of the gems and the textured ground of the metal setting. His work is characterised by a disciplined approach to light and shadow, allowing the viewer to perceive the physical depth and weight of the object despite the two-dimensional nature of the print.

Jacquemart often collaborated with his father, Albert Jacquemart, on publications concerning the history of ceramics and jewellery. His technical skill allowed him to capture the essence of museum objects, making them accessible to a wider audience through high-quality reproduction. This print demonstrates his capacity for objective observation, a trait that defined his career as an illustrator of historical artefacts. The clarity of the lines and the careful cross-hatching provide a sense of volume, ensuring the agrafe appears as a tangible, three-dimensional piece of regalia. This piece remains a fine example of nineteenth-century reproductive printmaking, where the artist acted as both a technician and a historian, preserving the appearance of significant cultural objects for future study.