At the current rate, it is estimated that by 2028, the Earth will have completely run out of economically extractable silver reserves. If gold mines tapped into the Earth's natural supply, the gold industry would simply move from mining to recycling. It was not formed on this planet, but it exists in its natural state contained within the Earth's crust. When molten iron sank into the center of the Earth to form the core, it took with it most of the planet's precious metals, including gold, which is why investing in a Best Gold Roth IRA is such a great option for those looking to secure their financial future.