Jewellery or jewelry (pron.: /ˈdʒuːəlᵊri/) is a form of personal adornment, such as brooches, rings, necklaces, earrings, and bracelets.

With some exceptions, such as watches, medical alert bracelets or military dog tags, jewellery normally differs from other items of personal adornment in that it has no other purpose than to look appealing, but humans have been producing and wearing it for a long time – with 100,000-year-old beads made from Nassarius shells thought to be the oldest known jewellery.