There are three loose ends to consider: valuation, economic and market fundamentals.
So far as I am aware nearly everyone is overlooking the obvious. You cannot consider the value of gold without taking account of the changes in the quantities of the currency and the above-ground stock of gold over time. The chart above shows the adjusted US dollar price of gold rebased to 100 in January 2005 when the gold price was $422. In 2005 dollars, using True Money Supply plus excess reserves as the currency adjustment, gold has risen only 13.9% to an equivalent price of $481.
TMS, or Austrian Money Supply, represents cash, checking accounts and savings deposits that can be redeemed for gold under a full convertibility regime. Excess reserves represent the funds deposited by banks at the Fed, which similarly can be redeemed for gold. The sum of TMS and excess reserves are therefore the comparable currency measure. Read more >>