Purification: Onyx is a stone that strongly absorbs ambient energies and requires regular purification. Prefer gentle methods such as fumigation using Palo Santo or sage, or placing it on a quartz cluster.
Recharging: To restore its energy, place the Onyx on an amethyst or quartz recharging tray. You can also let it benefit from the earth's energy by placing it for a few hours in a natural environment or on a windowsill during the new moon.