A ring is an equipment which can improve your strength, valor, luck or spirit as well as advanced stats. You can only wear 4 rings at the same time. As with all other equipment items, they will also boost your characters prestige.
Base stats from your rings can be boosted with the Ritual Ornament.
The following rings can be dropped by any boss of a Raid (Party Adventure).
Signet Rings feature a small boost to the percent boni of each Affix of the ring compared to their equivalent Band Rings.