Sage's Ring is an accessory in Final Fantasy XII that halves MP costs of spells, and has the wearer absorb Holy. Wearing multiple pieces of equipment that all give the same elemental resistance does not stack, but certain different types do. As weakness + absorb traits equal to absorbing double, equipping the Sage's Ring alongside a Bone Helm/Mail, results in the wearer absorbing double damage from Holy attacks.
In the original PlayStation 2 versions, the ring can be bought for 22,000 gil from Old Archades before obtaining the Treaty-Blade. It is also found in a treasure in Henne Mines' Special Charter Shaft (55% chance to appear, 65% chance to contain gil, 50% chance the item treasure is Sage's Ring without the Diamond Armlet ), and the Great Crystal's Sirhru Jilaam Pratii'vaa (80% chance for gil, 50% chance the item treasure is Sage's Ring without the Diamond Armlet ). Sage's Ring can be rarely stolen from Arioch.
Sage's Ring is a possible reward in the Hunt Club sidequest on the Phon Coast; it can be bought for 33,000 gil from the Shifty-Eyed Merchant once the player gives 25 Rare Game trophies to Stok, one to Atak and one to Blok. Depending on whom the player gives the most trophies to, there will be an additional reward after trading in all 30 trophies. The final rewards are buyable at the Outfitters. Giving 16 or more trophies to Stok, earns Sage's Ring.
In the updated Zodiac versions, Sage's Ring can't be bought from shops, but sells for 10,500 gil. It is found as a treasure in Henne Mines' Phase 2 Shaft (25% chance to appear, but is always Sage's Ring), Stilshrine of Miriam's Ward of Steel (always appears), and Subterra's Umbra - South (70% chance to appear, 80% chance for gil, 50% chance the item treasure is a Sage's Ring without the Diamond Armlet), as well as in Trial Mode stages 80 and 94 with the Diamond Armlet equipped.
Sage's Ring is still a reward through the Hunt Club, by giving Stok 15 or fewer Rare Game trophies.
Both uses of halving MP costs, and the Absorb: Holy trait, are useful, the latter especially against Ultima. The halving of MP costs is useful on those who do a lot casting, like dedicated healers and mages, or White Mages and Black Mages in the Zodiac versions. However, these jobs also learn many augments that refund MP from using normal abilities and for taking damage, and so MP does not tend to be scarce in the endgame even for pure magick-users even without the Sage's Ring. Sage's Ring could then help a character who has not been built as a mage, but who is situationally placed in a casting role.
sage in classical philosophy is someone who has attained the wisdom which a philosopher seeks.A