of Crystals can be done through following ways :-
This is the most popular way to cleanse crystals. Put your crystals
in salt water as the salt water has the tendency to absorb negativity.
Sea Salt :
Crystals can be placed in sea salt for up to 24 hours for cleaning.
Sunlight or Moonlight :
Place crystals under the light of a full moon/sun for 24 hours. The
rays of the sun and moon are full of energy.
It's a much quicker way to clear crystals. Pass your crystals several
times through the smoke incense like Nag Champa or Gugad.
As a Reiki practitioner just like healing your patients heal your crystals
and given them universal life force energy.