I was cleaning up the chain links on the dining room 6 light chandelier and accidently dropped the light. None of the connections came loose all 6 lights arched and the breaker downstairs tripped.
I find it strange that the light dropped and all 6 lights "arced".
If the lights "arced", the cord must have been long enough that the lamps were still supplied with electricity when the chandelier hit the floor (?)
However, if the lamps were incandescent, it is quite likely that un-powered filaments would break with such a shock.
In any case, as it appears that a short-circuit has occurred, since the circuit breaker tripped, it is virtually certain that the dimmer has been grossly overloaded and has failed, so, proceed as in Post #4, testing each socket in turn with a known good lamp.
(Have you tested each of the 6 lamps concerned in a known good socket to see if they are working?)
Is this an antique chandelier? The wiring inside could be brittle and a short circuit might be inside one of the arms leading to the light sockets. So the chandelier will need careful inspection and perhaps replacing all of the internal wiring.
AllanJ is correct if this is an antique chandelier - wired with other than PVC insulated wiring.
However, unless incandescent lamps of a wattage higher than that specified for the sockets concerned have been used, damage to PVC insulated wiring is unlikely.
(It is, perhaps, a pity that "Plug In Ceiling Roses" such as these (
https://www.tlc-direct.co.uk/Products/LDMC11A.html), seem not to be available to the North American market.
They are quite handy when the time comes to clean a chandelier as it then can be unplugged, brought to floor level for cleaning, and replaced.
These are rated at up to 5 kg but your 6 Lamp chandelier may be heavier than this.)