To test the theory I directly shorted circuit. The breaker did not trip, the jumper wire melted and caught fire.
That was not 'testing a breaker', that was for lack of a better word
stupidI highly doubt you got two non-functional breakers in a row.
It is possible that the branch circuit has high impedance.
It is more likely that the jewelry and your jumper where not 'connected' to the circuit well enough to produce a magnetic trip.
That was a very bad idea, you should change your 'testing' procedures.
