When you start a new game, go to the only shop that is selling a ring. It is towards the lower left. Buy this ring then go to one of the houses near the top right of the town. Talk to, I think the third guy in the room and he offers you one and a half times of the amount of gold you paid for it. Later when you go to the very bottom right corner of the grasslands, there is a big lake you should search the shores of. You will find some artifact you can sell.