The present invention provides for a universal stud earring clasp that allows for fastening jewelry and jewelry devices. The present invention facilitates and improves the clasp system for jewelry by providing for a universal fastening device that is particularly compatible with stud earrings, but not limited to stud earring compatibility. The clasp provides for a greater pressure surface and a more ergonomic grip. People from almost all age ranges can handle the clasp, and the clasp is cost-efficient for manufacturing. The clasp also provides for a stud earring clap that is compatible with pins from the ALPA locking system. This invention solves the unmet need of a more secure clasp alternative to existing stud earrings and jewelry items.

A clasp for a jewelry item comprising: a base body (100) comprising a horizontal base (101) perforated at the centre of same by an opening (102) intended to receive a notched rod (1), said base body (100) comprising a vertical guide cylinder (102) and first (110) and second (120) support arms, in which the first support arm comprises, in the lower part of same, a first bore (111) intended to receive a horizontal assembly and articulation pin (800), in which the second support arm (120) comprises, in the lower part of same, a second bore (121) intended to receive said assembly and articulation pin (800); a first jaw (200) comprising a first tab (210) provided with a third bore (211) and a second tab (220) provided with a fourth bore (221), said third and fourth bores being configured to become aligned with said first and second bores (111, 121); a second jaw (300) comprising a first tab (310) provided with a fifth bore (311) and a second tab (320) provided with a sixth bore (321), said fifth (311) and sixth (321) bores being configured to become aligned with said first and second bores (111, 121); in which the edges of said first and second jaws (200; 300) have a slightly convex profile configured to cooperate with the edges of said support arms (110, 120) in order to allow slight rotation about the alignment axis of the bores with the aim of implementing a locking mechanism of a notched rod.