Overview
Tired to search graves here and there? this is your definitive guide
How to do it
Very simple. First you need to find a grave like this (see the screenshoot) and interact with it. If you didn’t found any charm (amulet) don’t worry. Just wait there for a couple of minutes until you can interact with the grave again. Repeat again and again until you have the 10 charms
Remember that the loot is random so be patient. I got 2 charms in 10 min aprox. Good luck!