Hematite is protective, absorbing negativity.

If pendant becomes dullIt needs to be recharged.  
Allow to soak in slowly running water for 15-20 minutes to dispell the negativity it carries; pat dry; then expose it to moonight, outside or on a window ledge.  If sunlight is the only option, expose the back side of pendant and as little of beads as possible to prevent colors fading permemnantly