Rothschilds bought the gold market. They are the ones who adjust the price. There are many articles on it. Here’s one good one.
http://goldbasics.blogspot.com/2009/08/rothschilds-control-gold-market.html?m=1
Roth’s bought the remaining gold, and set the price. He was interviewed.
https://www.whatinvestment.co.uk/lord-rothschild-why-iand39ve-sold-hundreds-of-millions-of-pounds-worth-of-shares-and-bought-gold-2540166/