Provided is a multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.

A method for machining by laser ablation or by micro-milling a raised and/or hollow structure on an impression of an injection mould. A method for manufacturing a ceramic or cermet item by injection using the injection mould to produce an item, and in particular a watch bezel, decorated directly during the injection.

Economical method for manufacturing a timepiece display or hand-fitting component: a casing material is chosen for each visible surface: amorphous metal or nanocrystalline alloy or alloy of gold and/or silver and/or copper and/or rhodium and/or titanium and/or aluminium; a thick, hollow blank of a thickness greater than 20 micrometres is created in a first tool, from the casing material with an initial thickness greater than or equal to 50 micrometres, with an overthickness with respect to each visible surface, with a first cavity for reception of a support structure; an interior material is chosen to make a support structure; the support structure is made and joined to the first cavity; one visible surface remaining visible, is diamond tool machined, removing all or part of the overthickness from the blank.

Economical method for manufacturing a timepiece display or hand-fitting component: a casing material is chosen for each visible surface: amorphous metal or nanocrystalline alloy or alloy of gold and/or silver and/or copper and/or rhodium and/or titanium and/or aluminium; a thick, hollow blank of a thickness greater than 20 micrometres is created in a first tool, from the casing material with an initial thickness greater than or equal to 50 micrometres, with an overthickness with respect to each visible surface, with a first cavity for reception of a support structure; an interior material is chosen to make a support structure; the support structure is made and joined to the first cavity; one visible surface remaining visible, is diamond tool machined, removing all or part of the overthickness from the blank.

A multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.

Provided is a multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.