Abstract: A finger ring comprises first and second separate ring members, each of which has a hole into which the finger can be inserted, and is composed of a central inscribed circular main hole region whose diameter is substantially equal to the smaller diameter of the joint of the finger to be inserted into the ring member and a pair of segmental supplementary hole region extending from said central circular main hole region, and a pair of permanent magnets for connecting the first and second ring members fitted around the finger so that their relative movement along the finger is prevented when the first ring member is rotated through a prescribed angle.