You can run under tepid water amd allow to dry in sunlight. If it is a dark colored stone, then be careful of the sun bleaching it. If it is Amethyst you want to cleanse it with moonlight or Reiki. Most people cleanse their stones once then as needed if they are touched by another human being. I tend to Cleanse with water and sunlight till dry then for monthy cleansing, I use Reiki. I am careful with Amethyst, Lepidolite, aventurine, Amazonite, Sodalite, and Lapis Lazuli. These are just a few.
My next post will be about making Gem Elixirs for gem Healing.
As always, crystal healing is a holistic form of healing and doesn't take the place of your regular provider. If you have any disease process, please seek medical attention. Crystals are just one part of healing
---Jennifer Bagley, My Divine Crystals