(via Nicole Hill- Confetti Garden (nicswk) on Pinterest)
It is said that a stone with a hole through it brings good luck to the person that carries it. But it must be found, not looked for, not bought nor gifted.
Why and How to Cleanse your Crystals and Gemstones - Pinny sez: I can't vouch for all of these, but some are good. Best is water bath, then sunlight to charge, or leave for a day or so on a citrine cluster (not amethyst). Burying in earth for a day or so is good, too.