The present invention relates to a piece of jewelry (1) having a plurality of modular elements or arms (10, 10'), wherein the plurality of modular elements or arms (10, 10') are hinged to each other in a swing-like manner around one or more hinge axes (100), and each arm defines a central
hinge region (11) having at least one seat (110) for engaging at least one connecting element (31) for connecting an additional arm. The central
hinge region (11) is interposed between at least two lateral hinge regions (12, 13) located near both ends along the longitudinal direction (B) of the arm and further comprises lateral seats (120, 130) for engaging additional connecting elements (32, 33). The seats (11, 12, 13) for engaging the connecting elements (31, 32, 33) include holes or slots (110, 120, 130) between two openings formed on two opposing faces of the arm, the connecting elements include articulating pins designed to engage with the through holes, the through holes having
peripheral edges extended in at least one diametrically along the extension axis (A), and the through holes preferably have different predetermined lengths (D) between the different seats (11, 12, 13) present on each arm (10, 10').