The article indicated it was cost prohibitive and as far as I can tell they convert gold chloride into gold. They aren't actually creating anything new here. It's not really alchemy.
"There were many ways of not burdening one's conscience, of shunning responsibility, looking away, keeping mum. When the unspeakable truth of the holocaust then became known at the end of the war, all too many of us claimed that they had not known anything about it or even suspected anything."