The inflation-adjusted price per Troy ounce of gold went from a high of around $2400 in the the late 1400's, to a low of $200 in 1919; then, it rose in fits and starts until it peaked at nearly $1600 in 1980; it then declined, again in fits and starts, until it bottomed just below $400 in 2002; then it rose to nearly $2000 in 2012; and since then, has dropped to just over $1200, today's price:
1490 1919 1980 2002 2012 2017
----- ----- ----- ----- ----- -----
$2400 $200 $1600 $400 $2000 $1200
The price of gold is unstable over shorter time frames too. For example, since the start of last year, the price has oscillated between just over $1000 and nearly $1400 per Troy ounce.This kind of volatility seems normal for assets used as a store of value.
Sources:
[1] http://www.zerohedge.com/news/charting-price-gold-all-way-ba...
[2] https://en.wikipedia.org/wiki/Gold_as_an_investment#/media/F...