Since just before my first reiki attunement i got interested in crystals and i found this book really intersting
"The Crystal Bilble by Judy Hall"
It tells you in depth the physical and healing qualities of lots and lots of crystals. Iv never had enough of the right crystals to do all that grid stuff. but i just use whatever crystal feels right for whatever part of my body and just use it a lonside the reiki. and get some great results. I have used crystals on friends and family with reiki too. for example, just a single Rose Quartz on the heart chakra, or Citrine on the solar plexus or Amethyst for the liver.
You probably know this already but you can use the Reiki to cleanse and charge the crystals too.
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