| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1992 | 978-0-924700-00-2 | Ginny Katz | Beyond the Light: A Personal Guidebook for Healing, Growth, and Enlightenment |
| 1997 | 978-0-924700-08-8 | Michael Katz | Gemisphere Luminary |
| 2005 | 978-0-924700-14-9 | Michael Katz | Wisdom Of The Gemstone Guardians |
| '' | 978-0-924700-24-8 | '' | Gemstone Energy Medicine: Healing Body, Mind And Spirit |
| 1989 | 978-0-924700-50-7 | Ginny Katz · Michael Katz | Gifts of the gemstone guardians: The mission, purpose, effects, and therapeutic applications of gemstones in their spherical form |