No one "made" gold here, they refined it from an ore. The only difference being they used bacteria to refine it rather than an industrial process. The only way to make gold is with a supernova.
Actually I believe it's possible to synthesize gold using a particle accelerator. It's economically impractical since it costs millions to produce just a few grams, and the end result is also usually highly radioactive which would make it unsuitable for pretty much any application where gold is currently used.