The Jasper, a particularly robust stone, can be purified using simple and effective methods. You can briefly pass it under clear water or use fumigation (sage, palo santo) to gently release it from accumulated energies.
For recharging, Jasper particularly enjoys being placed in contact with nature, or being exposed to the moonlight, including outside of full moon periods. Placing it on a quartz cluster is also an effective method to restore its grounding energy.