Katrina introduces the 12 chakra system in this book. She uses higher vibration crystal to activate the chakras outside our body. Crystalline Transmission (transform our physical body to be a crystal!!!) is the goal of crystal practice to adapt the increasing frequency in the Earth. Though this book has be written for 10 yrs, it is still advance for most crystal users.
This is the culmination of her work with "crystals" and should be read AFTER the two earlier books. It is unique in that it is not "Hokey" but well grounded and useful. I studied with her while she was still in Taos, NM and am indebted to her for her insights into the crystalline world.