A jewelry item that includes a plurality of separate links that are supported by a common substrate and in which the links are representative of the DNA lineage of the wearer of the jewelry item. The DNA lineage is represented by the predetermined percentage of DNA on a country-by-country basis as obtained for the wearer; the predetermined percentage being represented by respective different colors that identify each predetermined percentage of DNA. The separate links are in the colors corresponding to the predetermined percentage for each link.

An article of jewelry or costume jewelry having at least one elastic or flexible support element and a plurality of ornamental elements fitted in succession on the elastic or flexible support element and coupled two by two along a development direction of the article of jewelry or costume jewelry is provided. Each ornamental element has a first coupling face for coupling to a subsequent contiguous ornamental element, the first coupling face having a raised formation, and an opposite second coupling face for coupling to a previous contiguous ornamental element, the second coupling face having a recess complementary in shape to the raised formation of the previous contiguous ornamental element. Two contiguous ornamental elements are coupled together by accommodating the raised formation of a first element of the two contiguous ornamental elements within the recess of a second element of the two contiguous ornamental elements, with at least one shock-absorbing spacer element arranged therebetween.

A clasp including: a first extension link that is formed in a U-shape and in which a closed end side is rotatably supported at one end of a clasp cover of a band; and a second extension link connected to an open end side of the first extension link via a connecting member, wherein, the second extension link is fixed to the first extension link at a position different from a connected position in the connecting member, and the first extension link is fixed to the clasp cover at a position different from the one end of the clasp cover where the first extension link is rotatably supported.

A clasp including: a first extension link in which one end side is rotatably supported at one end of a clasp cover of a band; and a second extension link connected to a side opposite of the one end side of the first extension link via a connecting member, wherein, one of the first extension link or the second extension link is fixed to the other of the first extension link or the second extension link at a position different from a connected position in the connecting member, and the first extension link is fixed to the clasp cover at a position different from the one end of the clasp cover where the first extension link is rotatably supported.