Eidoo the Swiss startup recently created a new stablecoin that is anchored to the price of gold, the token called Ekon would be compatible with ERC-20, and could be used in its decentralized Exchange and the multi-currency wallet.
The Token Ekon can be exchanged for a gram of 99.9% fine gold, which would be stored in its b + ovedas and will be available for auditing every 90 days.
image source: https://cryptonomist.ch/en/blockchain-en/eidoo-stable-coin/
Ekon purchase and sale commissions in the Exchange will generate profits for EIDOO in the form of an EDO Token and these same commissions will be applied for those who wish to change their token for physical gold.