Gold!
"You’re indestructible Always believing ‘Cause you are gold!" From Gold by Spandau Ballet, 1983 Over the past 20 years or so, the US dollar price of an ounce of gold has risen six-fold, far outstripping the increase in the US CPI. Why is gold so expensive? If the market for gold extraction were competitive then, much like any other commodity, its price would gravitate towards the marginal cost of extraction. And if the marginal cost of extraction were to rise