The Gnome Emerald Amulet of protection is the reward from Bolren for completing the Tree Gnome Village quest. It provides the highest armour bonus in the game of any amulet. Some high-levelled players choose to switch to a dragonstone amulet when attacking, then switch to a Gnome Amulet when being attacked. When lost, you can get the amulet back by simply talking to Bolren in the center of Tree Gnome Village.