The "Grand Feu" enamel is a decorative technique used in watchmaking. This is one of the most difficult technique of the art of watches decorating which offers as well the highest durability.
The master artisan does not paint the motif directly on the watch but applies more oxides on the dial in gold. Then, the enameller moves the dial into fire (800-900° C) several times to allow motif and colors appear gradually. The "Grand Feu" enamel sets unalterable and refined decoration.