That being said, there are inherent limitations of gold. While it can go up in value it too can crash. However it will never become worthless & crash to ‘0’ like some stocks such as First Republic bank did in the US. No matter how much it goes down gold will always be worth something. It is not really an investment but more of a hedge against inflation
I’d look to other metals such as copper, silver or platinum for diversification. Other commodities such as oil, wheat, coffee & cocoa too