Michael has been the Chair of ACHO (Affiliation of Crystal Healing Organizations) 2009-2014 and was the Chair of CTC Crystal Therapy Council. He teaches two year crystal healing diplomas as well as post graduate classes for the School of Soul Medicine. Judy Hall is an internationally known author, astrologer, psychic, and healer. She is the author of more than 30 books, including The Crystal Bible and The Encyclopedia of Crystals.