In addition to Bitcoin support which Bluecoins already support from version 21, Bluecoins now supports Gold (XAU), Platinum (XPT), Silver (XAG) & Palladium (XPD) equivalent currency transactions.
To create an account with this currency, simply create a new account and choose any of these as your default currency. The app would automatically download the conversion rates for this precious metals (1 troy ounce) against your local currency.
Also, any transactions can choose any of this precious metals as currency.
Additional Reading: