Abstract: Procedure to obtain the diamond effect on a precious metal chain with hollow links, that includes the following phases: Advancing step by step of a semi-manufactured product chain made of hollow links, by means of a cold moulding station; At each stop, in the moulding station, carrying out in logical correspondence the descent towards a matched mould, of at least one core and at least one mould, in which the core can be moved perpendicularly through the mould, placed inside each individual link of the corresponding segment of chain, disposing the perimeter surface in contact with the interior perimeter of each link; Lowering the mould with simultaneous deformation and disposition of each link; Partially raising the core, with the mould and matched mould remaining in closed position; and ending the ascension of the core until extraction of the corresponding link, with ascension towards the top part of the mould for a successive cycle that must be carried out on the segment of successive links.

Abstract: Procedure to obtain the diamond effect on a precious metal chain with hollow links, that comprises the following phases: