That said, many so-called “experts” recommend investing in stocks, with an investment of 30 to 40% in precious metals. It is generally said that between 10 and 20% of that amount should be in gold and silver each, although that depends on you. This assignment may be a little more confusing if platinum, palladium and other metals are also considered. For those looking for an even more secure option, a Gold Silver Backed IRA may be the best choice.