Originally Posted by Botnst

Gravity (whatever it is) is a affectation of mass. To balance a frce vector one must introduce a force (magnitude and direction) proportionate to the displacement one seeks.

Magnetism is a result of charged alignments of atoms within a volume and is also a function of the direction and magnitude of current (atomic factors which can be ignored, depending on scale). Gravity is a function of mass, regardless of charge.

One could shield a volume of space by exactly replication (and opposite sign) the space-time distortion plus the magnetic force in a sign-opposite direction.