Process for the production of a timepiece provided with a raised external element

A process for the production of a part of a timepiece or a jewelry provided with an external element comprising:

• forming an electrically conductive substrate having an upper surface and a lower surface;
• forming a pattern having a recess within the substrate between the upper surface and the lower surface;
• depositing an electrically insulating layer into the recess so that an upper surface of the insulating layer extends only as far as the upper surface of the substrate;
• depositing a metal layer onto the upper surface of the substrate by galvanic growth so that a bottom surface of the metal layer covers only a portion of the upper surface of the insulating layer;
• dissolving the insulating layer;
• covering an assembly comprising the substrate and the metal layer with a mass of a base material of the part, wherein the mass forms an imprint of the pattern;
• and
• separating the mass and the metal layer from the substrate, wherein the mass then exhibits an external element with a shape corresponding to the imprint of the pattern.