Garadain Glacierbane ate my adamantium coldain insignia ring

[mohikano]

Hello. I was doing the quest of coldain ring , we protect Corbin Blackwell, we go until Dobbin Crossaxe , i gave him my 6 ring and he gave me the note to Garadain Glacierbane. Well when i gave the note to Garadian he didnt gave me back the 7 ring, i dunno why , i wasnt hide , and there was a guy hunting there but garadian wasnt killing any mob.
My players are Mohikano , Blanqui and Mequetrefe. thanks for your time i ll wait your answer.