Abstract: The present invention relates to a fastening system for fastening a jewellery element (3) to an item of jewellery (12) and an item of jewellery comprising the fastening system according to the invention. The fastening system comprises a setting constructed on the item of jewellery (12) with a support part (1) and a fastening device (2) and a jewellery element (3) releasably fastenable on the support part (1) of the setting by means of the fastening device (2), the support part (1) comprising an aperture (4) which is capable of at least partially receiving the jewellery element (3).