1. Reaper's Coast - Lagan
Near Driftwood you will encounter a fisher's hut, inhabited by Lagan. He will tell you he lost his ring and ask you to retrieve it.
You don't have to look very far. It's in the area highlighted below. It will also be automatically revealed when your team gets close enough. When you pick the ring up, however, the Voidwoken will attack.
If Lagan survives, you will be able to decide what to do with the ring.
Choice 1: Give the ring
Talking to Lagan you have to confirm that you indeed want to give him the ring back. If your persuasion is high enough, you can convince him to give you some extra gold.
Award: 5000 experience points + optional gold
Choice 2: Keep the ring
You can also decide to keep the ring for yourself.
Award: Cooper Ring