crystals as healing tools, it is always a good idea to cleanse them before and after each session.
There are a variety of widely-used methods to cleanse healing crystals. Choosing the best cleansing method usually depends on the specific type of crystal you are cleansing. Exposure to direct sunlight for about one hour is generally sufficient to cleanse most crystals. Certain crystals may fade if left out in the sunlight, amethyst being a primary example. Refrain from placing your amethysts in direct sunlight if you desire for them to keep their vibrant, purple hue. Moonlight cleansing may potentially take many hours, or even days. To expose a crystal to all phases of the moon phases, place the crystal outside each night at sundown, and retrieve it before sunrise), for four weeks (one lunar cycle).
Some crystals can dissolve if left in water, whereas other crystals react well to a soaking in fresh water. One method is to cleanse crystals under a running tap of cold water while simultaneously lightly brushing them with a toothbrush until they sparkle.
Following is a list of some common crystal cleansing methods:
Rub stones with incense or herbs (lavender, sage, etc.)
Energize stones in sunlight.
Energize stones under moonlight.
Cleanse stones in the ocean or in a bowl of salt water.
Cleanse stones in a natural body of fresh water (lake, river, pond, etc.)
Purify crystals overnight in brown rice.
Bury stones in the earth to purify.
Clean stones under a running tap of cold water.
Cleanse and re-energize crystals on purple plates.