ELI5-is there any chemical solution or process that would discolour gold to the point where it would look like lead?

Question

Long story short-this is research for a piece of fiction. Is there any chemical or reaction, even if otherwise pointless, that would achieve this, besides just painting the gold?

In: 2

Answer 1

Gold is quite inert, but you can dissolve it, so if you speckled it with Aqua Regia you could make the surface look pitted and worn?

https://en.m.wikipedia.org/wiki/Aqua_regia