An "I didn't know that" moment for most iPhone users we are certain:
...Each iPhone 5, for instance, contains $1.58 of gold, $.36 of silver, $.05 of platinum, and $.12 of copper.
Those numbers may sound small, but the phone holds from six to 300 times more precious metal than the equivalent amount of ore from a mine.
Also, in addition to the more familiar precious metals, smartphones also contain traces of huge swaths of the periodic table, particularly those “rare earths” that today’s electronics so depend on: Yttrium, Lanthanum, Neodymium, Gadolinium, and Europium, among others.
Great infographic here.