Gold is just for beauty but it cannot be use in daily transaction so the answer is bitcoins. You do not earn gold every day by trading while bitcoins gives us the chance to trade everyday and earn a decent amount.
Just for beauty? Are you really have knowledge about gold? Gold can be used also for daily transaction by doing trades. Also you can transact with gold offline. Look like you don't know well how gold system is just because you are into bitcoin. Any experience about gold?