Why do you think that ? Oil is a commodity that trades based on GDP growth, transportation, heating, etc. It is unique in that it is a liquid and hence valueable for ease as a fuel (vs. gases or solids). Gold is a commodity used in jewelry and susceptible to Central Bank buying/selling, Chinese/Indian buying/selling, etc. They don't and CAN'T economically correlate because only 1 is tied to the economy and the other is a speculative commodity.