Gem Guides Book Co · Gem Guides Book Company
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| A Gem Cutter's Handbook: Advanced Cabochon Cutting | 978-0-910652-14-8 (0-910652-14-7) | 1986 |
| Cabochon Cutting | 978-0-935182-27-9 (0-935182-27-6) | 1986 |
J.C. · J Cox · J.R. · Jack C. · Jack Cox · Jack R. · R.C.