The embossing technique consists in the relief engraving of a thin metal foil (copper, silver, gold, aluminum) of figures, shapes, writings and decorative motifs, obtained by pressing and hollowing the surface of the metal with sharp-tipped or rounded tools.

It is the technique of metalworking in thin plate, conducted in such a way as to bring out the relief figures; A technique that is also used with other metals, in addition to gold and silver, such as copper, tin and iron.