Add-on (Final Fantasy IX)

An add-on is an equipment type similar to accessory in Final Fantasy IX. Add-ons have various effects, such as allowing the absorption of certain elements or raising certain stats. Add-ons are not purchasable in shops, but found or crafted in synthesis shops. Each character can equip one add-on at a time.

Jewels
Jewels are another type of add-on. Most of them don't have any effect on the user besides teaching them abilities, and they can be used during battle to heal a single target's HP.