Clasp of Safeguarding

This tiny, decorative clasp protects your valuable magic items by drawing a harmful effect to itself instead.
A clasp of safeguarding looks like a delicate gold pin that can be affixed to clothing or armor. The pin is sculpted to resemble a tortoise, with two minuscule green gemstones for eyes. When the clasp is activated, the tortoise's head and feet animate and draw inside its shell. The clasp glows brilliant green and briefly surrounds you with a translucent ward of energy. After the light fades, the clasp does not return to its former appearance and is no longer magical.
To be effective, a clasp of safeguarding must be clipped on one of your exposed magic items. The clasp is automatically activated whenever you roll a natural 1 on a saving throw against a spell, trap, or other effect that could affect any of your items. Tor example, the clasp would activate in the case of a fireball spell or a dragon's lightning breath, but not in the case of a charm person spell, which cannot affect objects.
None of your exposed items (magical or otherwise) is harmed by the effect for which you rolled a natural 1 on your save. A clasp of safeguarding works only once. After it protects your equipment from harm, it loses its magic and becomes a mundane piece of jewelry.
Faint abjuration; CL 5th.; Craft Wondrous Item, Protection From Energy, 750 gp, 60 XP, 2 days.
Weight: 1/3 lb.
Price: 1,500 gp.
Source: Dungeonscape