| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Gems in Myth Legend and Lore | 978-0-9643550-2-6 (0-9643550-2-7) | 1999 |
| Gems in Myth, Legend and Lore Revised Edition | 978-0-9643550-4-0 (0-9643550-4-3) | 2007 |
| Jeweler's Resource: A Reference of Gems, Metals, Formulas and Terminology for Jewelers | 978-0-9643550-3-3 (0-9643550-3-5) | 2000 |