According to the book Love is in the Earth (Earth-Love Publishing House, 1995) by Melody, “Ancient priests used quartz crystals to render negative energy impotent, to dissolve enchantments and spells, and to destroy all black magic.”
Gemstones and crystals represent the healing energy of the earth and can be used as powerful magical healing tools. A common method of healing is to place gemstones representing the name of the person to be healed into an amulet bag or healing pouch. This pouch can be carried with you or worn around your neck as a magical healing talisman. Use one gemstone or crystal to represent each letter of a person's first name. For example, labradorite can be used to represent the letter L, emerald can be used to represent the letter E, and sodalite can be used to represent the letter S.
Gemstones pick up and absorb negative energy and can be drained of their energy after being used for awhile. You should periodically cleanse and charge your stones to ensure they can be used efficiently for healing purposes. Cleansing and charging is especially important for any stones that are not found by you in their natural environment. For example, gemstones purchased from New Age stores may have been handled by a multitude of customers before you purchased the stone. Cleansing will remove any build up of unwanted energy that may have accumulated from previous handlers of the stone.
A simple and magically potent method for cleansing gemstones is to present each of your stones to the four elements.
Air - present your stone to the east and pass the object through the smoke of burning incense. Or take the stone outside on a breezy day and let it spend a few minutes absorbing the energy from the wind.
Water - present your stone to the west and pass the object through a bowl of water. Or if you live near the water, take the stone to a river or stream and wash it in the fresh water.
Fire - present your stone to the south and pass the object through the flame of a candle or small fire. Or you can let the stone stand overnight in the light of the moon or if you are really pressed for time take the object outside for a few minutes during the heat of the noonday sun.
Earth - present your stone to the north and wave a previously charged rock or crystal over the stone that is being cleansed. Or, if you have more time you may bury the object overnight in the ground or in a cauldron filled with dirt.
After your stone has been cleansed as described above you will need to charge it with positive energy so that it can be put back into service for healing purposes. Hold the stone in your dominant hand while it is being charged. If you are left handed then hold the stone in your left hand while you are charging it. Visualize the stone being filled up with healing energy while reciting this charm three times.
When your gemstones and crystals are not being used for healing purposes they should be placed in a secure location away from curious hands. You don’t want the time and energy you placed in the cleansing and charging of them to be neutralized by the energy of other people. You can place each individual stone into a muslin, draw-string bag. Then place the bags in a safe location, such as a closet or cabinet, until you are ready to use them again.
For additional information on crystal healing methods see the articles Crystal Healing for Beginners and Holistic Healing Using Crystals.