To provide a ring with a structure providing the finger with smooth fitting with no slipping-off and rotation at wear despite the fact that a ring size is larger than that of the finger to enable the wearer to easily put it on or take it off the finger without a pain.

The ring main body 1 has an open and ringed part of the periphery and is so formed that the whole has a screw shape that has a pair of open ends 1a and 1b, formed into free ends in a top view and longitudinally skewed to diagonally face each other. A base 2 is formed in a space between the open ends 1a and 1b diagonally facing. A jewel 3 is fit into the base 2.