Since 2009 China has withdrawn 12,000 tonnes of gold from the rest of the world, where the short and medium-term gold price is set. For reasons I will explain, a tighter market outside of China can make the price of gold price rise faster than many expect. I believe the gold price will rise, because of excessive debt levels around the world, and incessant money printing by central banks. Central banks will try and resolve the debt burden through currency depreciation (inflation). China has been preparing for this scenario by buying gold.
One of the key drivers in recent decades for the US dollar gold price is real interest rates. It is thought that when interest rates on long-term sovereign bonds, minus inflation, are falling, it becomes more attractive to own gold as it is a less risky asset than sovereign bonds (gold has no counterparty risk). However, gold doesn't yield a return (unless you lend it). So, when real rates rise, it becomes more attractive to own bonds.
Although the correlation is clear, it might change in the future. Possibly, when real rates fall, the gold price will rise faster than before. Let me explain why.