I had to look up what quintillion means. Turns out it is a thousand <i>quadrillions</i>. Where quadrillion is a thousand <i>trillion</i>. (Edited)<p>So a thousand thousand billion worth of Metals. Although the metals wouldn't worth as much if it ever reach earth due to supply and demand.<p>I do wonder though, apart from Gold ( which is arguable but let's ignore it ), do we really need that much Iron or Nickel?