When a character is hit by an attack while wearing the Zircon of Safeguard; the character may use a free action to activate Zircon of Safeguard before damage is assigned. Once declared, the amulet has a pool of 25 hit points that can be absorbed. If damage from the attack(s) exceeds 25 damage, the amulet breaks and the remaining damage is transferred to the character. The amulet replenishes it's hit points after a long rest. 

 "This magical amulet has a large orange, oval Zircon set into a white gold chain. It's brilliant luster and intense fire gives it a real sparkle that is comparable to a diamond. Unlike a Diamond, Zircon is distinguished from a Diamond by is lower hardness and double refraction; prone to cracking and chipping if struck too hard."