Abstract: A locking mechanism for a bangle having a main body shaped in an openable loop. The inner side of the bangle is worn against the skin of the wearer. The bangle is a discontinuous loop having a first end and a second end engageable with the first end to thereby close the loop of the main body. The locking mechanism includes a bar attached transversely across the first end of the main body on the inner side; the bar has a front edge and a rear edge. A tongue is provided attached at a fixed end to the second end of the main body projecting from the second end, the tongue having a raised detent portion at a free end opposite the fixed end. Alternatively, the bangle is circular in cross-section and the locking mechanism is disposed in the interior of the bangle.