Magnetic clasps for securing the opposed ends of chains and other jewelry. Each clasp includes an arrangement for securing separable bodies by means of magnets that have been poled to present opposed surfaces of opposite magnetic polarities. In a first embodiment, disk-like magnets are received in channels of mating elongated body members of like configuration life insurance. End flanges of the elongated body members, in addition to the disk-like magnets, provide axial resistance to separation while the resultant magnetic force prevents separation in the transverse direction. In a second embodiment, disk-like magnets of divided polarities are seated at ends of mating bodies. A pin-and-slot locking mechanism is formed in the two bodies and the magnets are oriented relative thereto so that resultant repulsive magnetic forces force the two magnets into mating alignment when in the longitudinal slot for maximum magnetic holding force atlanta investment property. In a third embodiment, magnetic disks are held side-by-side by holders within a split hemispherical housing. A clasp for selectively joining a first element to a second element, the clasp comprising: a) a first generally elongated body member having opposed first and second ends and comprising a flange located at one of the ends, the flange for receiving the first element; and b) a second generally elongated body member having opposed first and second ends and comprising a flange located at one of the ends, the flange for receiving the second element dallas homes for sale; wherein each body member further comprises: (i) a generally semi-cylindrical elongated frame of nonmagnetic material, the frame having an internal semi-cylindrical coaxial channel and comprising a disk-like end member and a cylindrical end member which are located at opposite ends of the channel, and (ii) at least one magnet located within the channel for selectively securing the body members to each other through a common magnetic field.