Security locking device for jewelry and costume jewelery. The closure of the invention is applicable both in bracelets and in necklaces and similar elements, which are topped in two rings of which at least one of them must be fixed/released by the closing mechanism, so that it is constituted from an annular and open body, inside which are disposed springs that push respective balls provided in correspondence with the open ends of the annular body itself, contacting said balls together to establish the closure, with the particularity that the open ends of the body annular are capped in plugs (3) of identical section to the section of said annular body or ring (1), provided with a hole (4) of slightly smaller diameter than the balls themselves (5), so that a segment emerges spherical of these through them. (Machine-translation by Google Translate, not legally binding)
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