Katrina Raphaell is author of the Crystal Trilogy. CRYSTAL ENLIGHTENMENT, CRYSTAL HEALING and THE CRYSTALLINE TRANSMISSION. The information in the Crystal Trilogy forms the foundation for the Beginning, Intermediate and Advanced Crystal Healing Certification Courses. The Crystal Academy of Advanced Healing Arts has been happy to serve the international public since 1986. Beginning, Intermediate and Advanced Crystal Healing Certification courses are offered in various places on the Earth. In May 2010 Katrina's fourth book CRYSTALLINE ILLUMINATION was published.