Ruby equipment Ruby equipment is a recurring set of equipment in the series . They are generally far fewer in numbers than most other recurring equipment sets , and are most commonly found in the form of armor and accessories . Ruby equipment tends to fall into the lower power category of equipment , as it is generally weaker than Mythril equipment and Gold equipment , but stronger than Leather equipment , Bronze equipment , and Silver equipment . The most commonly recurring Ruby equipment is the Ruby Ring . Appearances . " Final Fantasy " . The first appearance of the Ruby equipment comes in the form of the Ruby Armlet , which is the mid - ranked armlet , being stronger than the Silver Armlet and Copper Armlet , but weaker than the Diamond Armlet and Thief ' s Armlet . It provides + 24 Defense and + 1 Weight , and can be bought for 50 , 000 gil at Gaia or found in the Citadel of Trials . " Final Fantasy II " . The Ruby Cuirass is the mid - ranked Cuirass , being stronger than the Copper and Silver Cuirasses , but weaker than the Gold and Diamond Cuirasses . It provides + 15 Defense , - 5 % Evade , + 5 % Magic Defense , and - 1 Intelligence / Spirit . It can be bought for 800 gil ( 600 in non - NES and PS versions ) at the Tropical Island , or found at Paul ' s House . " Final Fantasy IV " . The Ruby Ring is the second - weakest armlet , and is again the only piece of Ruby equipment . " Final Fantasy IV - Interlude - " . Ruby Ring returns in the sequel of " Final Fantasy IV " and its the sole piece of Ruby equipment while being the weakest armlet . It is initially equipped on Rydia , and can be equipped by all characters . It can be bought in Damcyan Castle and Fabul Castle for 1 , 000 gil . It can also be found in the Developer ' s Office inside the Tower of Babil . It has a defense of 0 , magic defense of 3 , magic evasion of 2 , and grants protection from Pig . The again is the sole Ruby equipment , and retains all of its stats and abilities as before . " Final Fantasy VII " . The Ruby Tiara is not a piece of equipment , but rather a key item obtained during the Wall Market segment of Midgar . " Final Fantasy X " . Several pieces of Ruby equipment exists , being the Ruby Shield , Ruby Ring , Ruby Bracer , Ruby Armguard , Ruby Armlet , Ruby Bangle , and Ruby Targe . All Ruby equipment are obtained if the dominant abilities on any armor are any four Magic Defense + % abilities . " Final Fantasy XI " . List of Ruby equipment : " Final Fantasy XII " . The sole piece of Ruby equipment is the Ruby Ring , which acts like the Reflect Ring , providing Auto - Reflect . The sole piece of Ruby equipment is the , which is a low to mid - ranked armor for Vaan . It provides + 36 Defense , + 24 Magick Defense , and resistance to Fire . " Final Fantasy XIII - 2 " . The sole piece of Ruby equipment is the Berserker ' s Ruby , which provides Enhanced Commando and has 35 Capacity . " Final Fantasy Tactics Advance " . The sole piece of Ruby equipment is the Ruby Earring , which prevents Confuse and Charm , as well as halving Dark - elemental damage . The returns as the sole piece of Ruby equipment in this installment , only now providing immunity to Charm . The is the sole Ruby equipment , which provides + 5 Attack , Defense , and Magic . The is the sole Ruby equipment , which grants + 5 Fire to both Elemental Attack and Defense . " Dissidia 012 Final Fantasy " . The Ruby Hourglass and Ruby Armor are the only Ruby equipment . Ruby Hourglass provides EX Mode Duration + 10 % and EX Mode Damage - 10 % , while the Ruby Armor is a level 60 heavy armor that provides + 2897 HP , + 34 Bravery , and Physical Defense + 5 % .