In the black gate jewelry store...

[paulo]

where is the key to the gate where the gold bars are?

[TDI]

I believe there is a section of the Mint that is unaccessible in Black Gate. You may have to wait for Serpent Isle to get there...

[TDI]

I should have read the title properly, you mean the jewerly store. Hmm, not sure if there is a key for that area, but perhaps the storekeeper has it on his body.

[paulo]

He hasn't.

[TDI]

So you actually murdered him to get to the gold, you greedy bastard!

[paulo]

Oh, he'd get resurrected. I'm just facilitating his life experiences.

[alagner]

I highly doubt anyone has ever found that key. ;]
Same thing about some chests in Despise I believe.