Bibliografie

1. Anderson, B.W. - Gem Testing [Londra, 1980]
2. Arem, J. E. - Gems and Jewelry [Tucson, Arizona, 1987]
3. Bauer, M. - Precious Stones [New York, Dover, 1968]
4. Gienger, Michael - Crystal Power, Crystal Healing, Cassell & Co., [London, 1998]
5. Hall, Judy - The lllustrated Guide to Crystals, Godsfield Press, [Alresford, 2000]
6. Hall, Judy - Crystal User's Handbook, Godsfield Press, [Alresford, 2002]
7. Hall, Judy - TheArt ofPsychic Protection, Samuel Weiser, [Maine, 1997]
8. Melody Love Is In The Earth, Earth Love Publishing House, [Coiorado, 1995]
9. Raphaell, Katrina - Crystal Healing, Vol. I, II, III, Aurora Press, [Sante Fe, 1987]
10. Raven, Hazel - Crystal Healing. The Complete Practitioner's Guide, Raven & Co., [Manchester, 2000]
11. Schumann, W. - Gemstones of the World [New York, 1977]
12. Smith, G. E. H. - Gemstones [Londra, 1972]