  A new mechanism for the origin of Saturn's rings is proposed for the first
time. It includes the appearance of an additional third force - the force of
diamagnetic expulsion of a diamagnetic ice particle after the emergence of the
magnetic field of Saturn and the mechanism of magnetic anisotropic accretion.
This force is acting together with force of gravity and centrifugal one on the
particles within protoplanetary cloud. After appearance of the force of
diamagnetic expulsion of ice particles, all their chaotic orbits start shifting
to the magnetic equator plane, where the minimum of magnetic energy of the
particles is observed. Every particle on the magnetic equator comes to a stable
position, and it prevents its horizontal and vertical shift. The particles are
trapped within three-dimensional magnetic well.
