An article of jewelry or costume jewelry, comprising at least one elastic or flexible support element that extends along a development direction of the article of jewelry or costume jewelry, and a plurality of ornamental elements that are fitted in succession on said elastic or flexible support element, each ornamental element being coupled to a next adjacent ornamental element along the development direction of the article of jewelry or costume jewelry,
- wherein each ornamental element has a body which comprises a first coupling face for coupling to a contiguous ornamental element along the development direction of the article of jewelry or costume jewelry, the first coupling face having a raised formation, and, on an opposite side, a second coupling face for coupling to a previous contiguous ornamental element along the development direction of the article of jewelry or costume jewelry, the second coupling face having a recess that is complementary in shape to the raised formation of the previous contiguous ornamental element, and
- wherein two contiguous ornamental elements are coupled together by accommodating the raised formation of a first ornamental element of the two contiguous ornamental elements within the recess of a second ornamental element of the two contiguous ornamental elements, with at least one shock-absorbing spacer element arranged therebetween.