https://soulalign.com/colle... Smudge - Still another popular way of cleansing crystals point is by'Smudging'. This requires burning Smudge Sticks or Incense Sticks and holding the crystals in the smoke cleanse the energies that are stored. A feather May Be Used to buff the smoke across the crystals and also this only Has to Be achieved for a Short Length of time.