Where is it?

Emerald???

Good guess & pretty close, but not Emerald

Never been there but a guess of cooper peddy ?

Not Coober Pedy. TPC was very close.

Thinking qld sapphire maybe ?

Even closer, but still not quite there yet. :)

Rubyvale???

I got nothing left without cheating lol

A joint effort guys, well done TPC, Rubyvale Qld, it is.

Cheating is not possible Gaddy. ;)

Cheat? I never cheat, I just use the resources available to me.

Where is this?
May be a little tough.