| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1999 | 978-0-9643550-2-6 | Bruce G. Knuth | Gems in Myth Legend and Lore |
| 2000 | 978-0-9643550-3-3 | '' | Jeweler's Resource: A Reference of Gems, Metals, Formulas and Terminology for Jewelers (Revised Edition) (Jewelry Crafts) |
| 2007 | 978-0-9643550-4-0 | '' | Gems in Myth, Legend and Lore Revised Edition |