Ronald Bonewitz originally trained as a geologist and mineralogist, working on oil and uranium exploration and the mining of gold and gemstones. A specialist in crystal chemistry, he also holds a PhD in Behavioural Science and gives personal development courses and lectures worldwide. Lilian Verner-Bonds is one of the world's leading colour experts and healer, and an international lecturer, teacher and author. Since the 80s she has been studying colour therapy and its relationship to health and personal growth. Lilian regularly appears on UK television as a colour 'agony aunt' and therapist, and has appeared as a consultant on 'Housebusters'.