The ring of visibility is a special ring that can be obtained from Rasolo the merchant, after the player retrieves his gilded cross for him during the quest Desert Treasure. Wearing the ring lets the player see mysterious ghosts and other objects that are normally invisible. The ring of visibility cannot be made using the Crafting skill.
It is required for entering the Shadow Dungeon, and is also required during the Curse of the Empty Lord and The General's Shadow miniquests.
Whenever the player dies while wearing/having the ring of visibility in your inventory, the player will always lose it even if they had less than 3 items on them. The exception is if the player dies while fighting Damis during Desert Treasure, in which case the player will keep the ring like normal. If lost, the ring can be reclaimed from Rasolo.