I hear this (incorrect) statement all the time. Gold can be produced, and alchemy is real to an extent. There is a lab that uses nuclear power to create gold. The issue is that it currently costs $4,000 per gram to make and production capacity is extremely limited. While I don't expect energy prices to drop to the point where that is a viable source of gold anytime soon, rest assured that gold does have a top. Currently about $120,000 per oz.
Diamonds can be produced perfect as fuck and cheap as shit, but this doesn't in the least affect the price of brilliants
There are those that believe the Great Pyramid of Giza was actually a nuclear power plant used to produce gold and that the Ark of the Covenant was the radioactive generator. Additionally, this power plant is speculated to have provided wireless power to devices miles away (an idea later demonstrated by Nikola Tesla). Russia is even experimenting with this technology today.
Good. Gimme more