You cant find a token/coin that has lasting values and comparable to metals or fiat money. The closest one is stablecoin since its value are not designed to be volatile. However these are still risky asset and centralized. If you heard the news about certain exchange freezing the usdt asset is a pure example of being manipulated or controlled by a hierarchy which are consists of private groups and companies.

If you want to pegged something, the best suggestion is either bitcoin ot ethereum. But problem with bitcon is the crosschain application so you fall down to eth which is clearly designed for tokens.