| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1988 | 978-0-9621910-0-8 | Robert Simmons · Kathy Warner | Moldavite: Starborn Stone of Transformation |
| 1997 | 978-0-9621910-1-5 | Naisha Ahsian | The Crystal Ally Cards: The Crystal Path to Self Knowledge |
| 2000 | 978-0-9621910-2-2 | Robert Simmons | Earthfire: A Tale of Transformation |
| 2005 | 978-0-9621910-3-9 | Robert Simmons · Naisha Ahsian | The Book of Stones: Who They Are & What They Teach |