A method for manufacturing a structured insert (10) for a mold for manufacturing a timepiece or jewelry component, for example a bracelet strand, including: —providing (E1) a template element (50) comprising a structured surface (51) with a pattern to be reproduced on a surface of a timepiece component; —covering (E2) the structured surface (51) of the template element (50) with a molding resin capable of reproducing a negative pattern of the pattern of the structured surface, and leaving the molding resin to solidify in order to obtain a structured insert (10); —separating (E3) the structured insert (10) from the template element (50), the structured insert (10) comprising a surface comprising the negative pattern; —optionally, cutting the structured insert (10) to the format corresponding to at least part of the timepiece component to be manufactured.