The following are a few methods for clearing negative energy from the crystals and re-energizing them with positive energy to help protect, support, and heal.
My Personal Favorite method is…
Cleansing By Using Your Intention: For those who are practiced in using intent to make energetic changes, place the crystal jewelry in front of you, focus your mental energies upon these stones, and ask the powers of the Universe to cleanse them of all negative energies and to re-energize your stones for their maximum potential for your highest good and the highest good of all others. You should also show gratitude by thanking the Universe doing for doing this work for you.
The Sun and Moon: Place your crystal jewelry, in a place where they will be fully exposed to the energizing rays of the sun and moon. Even if the day is cloudy or you can’t see the moon, their rays will energize the stones as long as they are directly exposed to these elements of nature. They will normally be cleansed within 24 hours of exposure. However, stones such as black tourmaline which are being used to deflect negative energies or help release negative energies in your physical and energetic bodies, may require up to 48 hours to become fully cleansed and regenerated. Stones such as aquamarine and amethyst will fade in the sun so you will have to use another method for cleansing and regenerating these gemstones.
The Earth: Place your crystal jewelry in the earth, either directly into the earth or place it in a cloth covering preferably a natural fabric such as cotton or wool or silk. Leave the gem or crystal buried for at least 24 hours to ensure that they become fully re-energized. If possible, find a spot where the soil is not being spread with chemicals through fertilizers or pesticides. This cleanses all negative energies and also re-energizes the stones.
Smudging With White Sage: Take some white sage and burn it until it has a good strong smoke. Then hold the piece of crystal jewelry in the smoke for at least one minute and preferably three or four minutes. This clears all negative energies that have become attached to this stone but does not energize the gem or crystal. To re-energize the stone, place it in a window so it can be exposed to the rays of the sun and moon. Or hold it in your hands and focus your thoughts to place a positive loving, supportive intention into the crystals. White Sage is the only herb that I use to cleanse.