There is a connection. I will give you an example. 1xaur can be melted for 1g of pure gold. The price of 1g of gold is 40$ that means that minimum price of 1xaur is 40$ and no one would not sell it below that price. If gold increases to 80$ per 1g... after that we have bigger lowest price. That's why Xaurum is unique investment.
Probably you have put this 1xaur for 1g just as an example, since 1 g can be melted for: 2084.197630221019 XAUR.
It's a clear calculation: circulating supply approx. 90 MIO XAUR divided by ammount of gold approx. 43 kg and you get how many XAUR you need for 1g