I have perhaps an ignorant question...

So the earth's mass essentially causes a distortion in space time which causes gravity. My question is, even to the smallest nth degree, why don't we observe other objects on earth with their own gravitational field?

For example if I take a giant ball of lead, and I move it around in a vacuum but on earth, why doesn't it act like it has its own magnetic field and cause dust (again, in a vacuum) to be disrupted as the field passes over them?

Has this effect been observed (under controlled conditions)?