A jewellery item, or a gold, silver, or costume jewellery item, accessories and the like include an annular band having a predetermined width and a plurality of modular elements of an elongated shape, at least one of the modular elements being connected to at least three additional modular elements by at least three connection points, the modular elements being hinged with each other about each connection point such that the jewellery item is adjustable between a contracted condition and an extended condition, wherein the width has different values along the overall extension of the jewellery item.