Atium seems more like an in-trade commodity, since it can also be purchased directly.
Recall also that gold is rather easy to extract (much, much lower tech than even iron). So assuming a similar timeline to Earth where, prior to the electronic age, gold's softness inhibited lack of practical usuage (solid gold anything is incongruous outside of bullion, foil is much more effective), scarcity, and non-tarnishing encouraged its ornamental or coinage uses.
Compare that with silver (solid silver being more doable), as well as copper(strong enough for some knives, strong ornaments, and leading to bronze); chemically very similar, often harvest-able together, and also easily extractable)
TLDR: Gold would emerge quickly in the tech of any society, and its scarcity would probably encourage its use just like Earth. By the time tLR came around it already would have been used.