Frost giant wolf tamer ate my Gem of Persuasion

[Bogking]

I have had 4 attempts at this. The 4th try I have trashed my dawrf faction to get indifferent with a frost giant wolf tamer but he just ate the wolf choker and the gem of persuasion I had (gave them seperately as the quest guides say).

When I charmed him the 3rd time (conned indifferent) he gave me the giant gem back but ate it straight after, so now I am stuck with no items and unable to repeat the quest due to being KOS in Thurgadin.