if its ionic form, or its in salt form it can somewhat poisonous, also gold jewelry is often contaminated or combined with other metals lead, nickel, copper, etc. elemental gold is inert though.

Paracelsus has famously claimed, the dose makes the poison. His point is basically, everything is potentially a poison. One can possibly get Oxygen or water poisoning even though both substances are vital for our survival.

I mean, let me shove liquid metal into your veins.

I don't think toxicity is the problem.

https://en.wikipedia.org/wiki/Metal_toxicity