Jewelry item, in particular bracelet, necklace or ring, comprising an elastic element extending along an extension direction(s) of the item over the entire length of the latter, and a plurality of decorative elements which are threaded one after the other on the elastic element so as to be slidable with respect to the latter and are non-releasably connected to each other, wherein each decorative element comprises a hollow body having a pair of longitudinally opposite first faces (20a, 20b), that is, a right face and a left face, respectively, and a pair of radially opposite second faces (20c, 20d), that is, an internal face and an external face, respectively, wherein the right face and the left face of each decorative element have a first through opening and a second through opening, respectively, said first and second through openings (24a, 24b) communicating with an internal cavity of the decorative element, and wherein the jewelry item further comprises, for each pair of adjacent decorative elements, a connection element, which is threaded on the elastic element and is connected on the one side with a first decorative element of said pair of adjacent decorative elements and on the longitudinally opposite side with a second decorative element of said pair of adjacent decorative elements, whereby said first and second decorative elements are movable relative to each other, sliding on the connection element, between a position of minimum relative distance and a position of maximum relative distance, characterized in that each connection element is connected to the respective first decorative element by first bayonet-type engaging means (32a, 24a, 22) comprising a first male engaging part formed by a first enlarged-section head portion of the connection element and a first female engaging part (24a, 22) formed by said first through opening and by the internal cavity of the body of said first decorative element, in that each connection element is connected to the respective second decorative element by second bayonet-type engaging means (32b, 24b, 22) comprising a second male engaging part formed by a second enlarged-section head portion of the connection element, on the opposite side to said first head portion, and a second female engaging part (24b, 22) formed by said second through opening and by the internal cavity of the body of said second decorative element, and in that said first bayonet-type engaging means (32a, 24a, 22) and said second bayonet-type engaging means (32b, 24b, 22) are configured in such a way that the coupling between the connection element and the respective decorative element is obtained through insertion of the respective male engaging part (32a, 32b) of the connection element into the female engaging part (24a, 24b, 22) of the respective decorative element, with the connection element being placed in a given first angular position relative to the respective decorative element, and then through rotation by a given angle of the connection element relative to the decorative element, so as to place the connection element in a given second angular position relative to the decorative element, rotated with respect to said first angular position, in which second angular position the male engaging part (32a, 32b) of the connection element is secured in the body of the decorative element and thus prevents the connection element from disengaging from the decorative element.