Here I farmed for one hour and got 1 bil gold.
Got 100% boongem and 15k% gold find.
https://www.youtube.com/watch?v=ujtJoqQ6vp4
Act 5 ruins of corvus and passage to corvus.
You need goldwrap for survival so you can focus on goldfind stats only, dont need good dps because you be killing mini mobs.
Avarice goldpickup ring from a3 bounty is a big plus to.
EDIT: The cursed chest in act 5 is also bar far the best chest to do for gold. It spawns twice as many mobs as a normal curses chests does. Its worth looking if it is there while u farm corvus
60mil gold for this chest hehe :P
https://www.youtube.com/watch?v=wbTAy95_MaI