The Emerald ring (i) is an upgraded version of the regular emerald ring. It can be imbued as a reward from Mobilising Armiesminigame. The player must provide the emerald ring to one of the officers in the Officers' Tower. The cost of doing so is 89,600 reward credits.
Due to its fairly poor stats many players will save their Mobilising Armies Reward Credits to purchase and imbue a better ring.