Abstract: A finger ring made of two arcute segments hinged together at one end of the segments are adapted to be locked with a clasp at the other end. The clasp is hingedly mounted on one segment and adapted to hook onto a transversal rod fixed on the other segement. A circumferential leaf spring fixed on the one segment adjacent the clasp, resiliently maintains the clasp in a position projecting at the free end of the one segment. Another similar leaf spring is positioned at the hinged end of the segements for resiliently maintaining the latter in a substantially circular relationship and firms up the action to snap open and snap shut the segments.