Coral Ring Coral Ring , also known as Water Ring , NulTide Ring , Blue Ring , and Aqua Ring , is a recurring accessory in the series . It usually absorbs Water - elemental attacks , making it useful on very few bosses . Appearances . " Final Fantasy V " . The Coral Ring is a rare accessory that absorbs Water - elemental attacks and can be bought in Istory in World 1 or the Phantom Village in World 3 for 50 , 000 gil . It can be found behind a waterfall in the cave area of the Interdimensional Rift , or dropped from Yellow Dragons . It is an essential piece of equipment for fighting the superboss Shinryu , as his opening move is a Water - elemental attack . It also grants + 5 Defense , Magic Defense , and Magic Evasion , as well as nullifying Fire - elemental attacks . However , it also makes the wearer weak to Lightning - elemental attacks as well . " Final Fantasy VII " . The Water Ring absorbs all Water - elemental attacks , and can be found on the way to the City of the Ancients in Coral Valley or stolen from Acrophies or Serpent . " Final Fantasy IX " . The Coral Ring absorbs Lightning - elemental attacks contrary to its earlier incarnations . It can be obtained early in the game if Freya wins the Festival of the Hunt , and can be synthesized for 1200 gil , a Lightning Staff , and a Rod . It also grants + 1 Speed , Magic Defense , and Spirit and + 2 Magic , and teaches the abilities Insomniac , Lancer , and Man Eater . All characters are able to equip this . " Final Fantasy X " . NulTide Ring ( known as Water Ring in Japan ) is an armor for Yuna , obtained if the dominant ability on any ring is SOS NulTide . " Final Fantasy X - 2 " . Blue Ring is an accessory that provides + 4 Magic , the ability to cast Water , and halves Water - elemental damage taken . In addition , when one is given to a creature , it can learn Water Ward . It can be bought for 3 , 000 gil at Besaid ( any chapter except Chapter 4 ) , found at Cavern of the Stolen Fayth ( Chapter 3 ) , dropped from Amorphous Gel and Haunt , stolen from Protean Gel , Sahagin Chief ( normal and Oversoul ) , and Tentacles ( rare ) , bribed from Amorphous Gel ( 3 , 892 gil ) , Dinictus ( 7 , 500 gil ) , and Tentacles ( 10 , 120 gil ) , as a possible prize for recalibrating the Thunder Plains towers , and as a possible reward for dispatching a level 2 Chocobo to Mushroom Rock Road . " Final Fantasy XI " . The Coral Ring is crafted from Coral Fragment x2 , a Wind Crystal , and requires 80 Bonecraft . It is wearable by all classes , at level 70 . Its base version gives - 9 Melee Accuracy in exchange for + 9 Ranged Accuracy , as well as - 3 % Magic Damage Taken . The high - quality version ( called a Merman ' s Ring ) gives + 10 Ranged Accuracy for only - 8 Melee Accuracy , and grants - 4 % Magic Damage Taken . " Final Fantasy XIII " . Aqua Ring is an accessory that grants resistance to water by 20 - 30 % , depending on it ' s level , and upgrades to the Riptide Ring by using the Cobaltite item . Aqua Rings can be found in the Rain - spotted Vale area of the Sunleth Waterscape and the Nutriculture Complex area of Palumpolum . Non - " Final Fantasy " appearances . " Live A Live " . The Coral Ring appears in the Near Future chapter . It increases intelligence by 4 and grants resistance to water .