First of all, it says a lot about America that they have to explain how to pronounce psyche.
Second, getting all that gold would make gold worthless.
Only if it is banned from importing it to the Earth, and is only used in space manufacturing only.
All depends on the speed with which it’s introduced to the market. All at once will crash the market, but it won’t be all at once. We have enough known gold in the ground on earth to crash the market if we mined it fast enough, but we don’t mine it that fast.