Bone ring

A bone ring was a magic ring that protected the wearer's life-force.

Description
Despite its name, it could be made from bone, stone, or ivory, but would never be made from any metals.

Powers
The ring would protect its wearer from being drained of life energy and health, such as an attack by a vampire. However, each time it protected the wearer, a charge was used up, and when all charges were gone, it crumbled to dust.

Creation
Creation of a bone ring required the spell negative energy protection.

Cost
It was worth between 20,000 and 36,000 gold pieces.