Diamond Ring

Diamond Ring is an accessory that can be obtained in Kingdom Hearts II. It provides a strong five points to a character's AP, as well as a small boost to strength. It is created only through synthesis, first by making a Garnet Ring and then upgrading it with a Serenity Shard. Like the Garnet Ring, a Diamond Ring is a C-level item that gives 16 synthesis experience points when made.

Trivia
The runes on the Diamond Ring read "Diamond".