The Diamond Shield is a mid-ranked shield in Final Fantasy XII that boosts the wearer's physical evade.
In the original PlayStation 2 version, the Diamond Shield is bought for 3,900 gil from Rabanastre and Nalbina Fortress after defeating Judge Bergan. It is found in a treasure in Phon Coast's The Hakawea Shore (southeast; 60% chance to appear, 80% chance for gil, 50% chance the item treasure is the Diamond Shield without the Diamond Armlet equipped ), and rarely drops from the Ichthons in Dalmasca Estersand's The Yoma. The Diamond Shield is also a hunt reward for Atomos.
In the updated Zodiac versions, the Diamond Shield can be bought for 3,900 gil in Mt Bur-Omisace. It is found in a treasure in Barheim Passage's Special Op Sector 5 (90% chance to appear, 50% chance for gil, 50% chance the item treasure is the Diamond Shield without the Diamond Armlet equipped), and Paramina Rift's Icebound Flow (75% chance to appear, 50% chance for gil, 50% chance the item treasure is the Diamond Shield without the Diamond Armlet equipped), as well as in Trial Mode Stage 77 with the Diamond Armlet equipped.
It still rarely drops from the Ichthons in Dalmasca Estersand's The Yoma, and now also from the Apsara (25%) in Trial Mode Stage 31.
The Diamond Shield is a mid ranked shield that helps evade physical attacks. It is useful only for a short while, however, as the superior Platinum Shield will soon eclipse it, and in the Zodiac versions replaces it as the reward for the Atomos hunt. In the Zodiac versions, the Diamond Shield can be used by the jobs Red Battlemage, Knight, Foebreaker and Shikari.
The Diamond Shield can be equipped by characters with one-handed weapons or no weapon in their available hand. It adds to the wearer's physical evasion. Shield Block augments also add +5% to physical evasion per augment purchased. Equipping a shield negates the Brawler augment, even if the character is still attacking bare-handed. Some enemies, especially all the toughest bosses and marks, have Ignore Evasion as a passive ability, which causes their attacks to ignore all blocking and parrying.
The chance to block granted by gloves and shields and Shield Block licenses is checked separately to, and before, the evade from one-handed weapons. If the shield block fails, the game checks for the weapon block, and if that fails, the game checks for parry.