Take a look at Digital gold, I think that the idea behind it's really better than almost all stablecoins we have, since the tokens are backed by real gold and a limited amount.
There are several - many actually - gold-backed stables.
Most of them are only a way to invest in gold, they are not designed to make gold usable as an everyday currency.
For example, they lack a card which the user can spend his gold at the supermarket with: if you can't use your gold in order to buy groceries, your gold isn't usable as a currency.
Tether Gold is an example of Digital gold as investment.
Kinesis is an example of Digital gold as currency.
I compared these 2 Digital Gold systems here -->
Tether Gold (XAUt)