That's true, he just needs to do his homework before going out and throwing money at some random metal. But I still say either silver or gold
In 2008, Rhodium went from $1,000 / Oz to $10,000 / Oz in a few months. Guys who invested in it got huge returns. But the bad point is that after a few months, it came back to $1,000 levels. Right now it is again going up, trading at $2,800 / Oz. Well.... who knows?