Method 2:
Bury it in the earth (make sure you mark it!), for 24 hours.

Method 3:
Smudge your crystal with sweetgrass, sage, cedar or incense. Pass the crystal several times through the wafting smoke.

Method 4:
Place your crystal on a large crystal cluster for 24 hours.

Method 5:
Soaking your crystal in flower water with the petals of the flowers such as rose, honeysuckle, orange blossoms for 24 hours will cleanse the crystal of all it's negative energy.

Method 6:
Place in Sea Salt Water. One teaspoon of Sea Salt in a glass bowl in cool water. Place the crystal in the water. Make sure the crystal is covered with water. Let this bathe in the water for 24 hours. This is a wonderful way to rejuvenate the power of your crystal. It washes away the negative energy it has absorbed and recharges it with the positive healing energy again. (Note: Some crystals should NOT be washed/cleansed in salt water/sun for it changes their physical properties (not their metaphysical properties), they are listed below.

NOTE:

Not to be cleansed in Salt Water:
*Calcite
*Carnelian
*Labradorite (Spectrolite)
*Lepidolite
*Moldivate
*Opal
*Turquoise
*Ulexite
Use caution with the softer Mica and crystaline stones

May fade in Sunlight:
*Amethyst
*Celestite
*Opal
*Turquoise