Gübelin, Eduard
| Country of origin: | Switserland |
|---|---|
| Books by this author: | Internal World of Gemstones, Photoatlas of Inclusions in Gemstones vol. 1, Photoatlas of Inclusions in Gemstones vol. 2, and Photoatlas of Inclusions in Gemstones vol. 3 |
| Country of origin: | Switserland |
|---|---|
| Books by this author: | Internal World of Gemstones, Photoatlas of Inclusions in Gemstones vol. 1, Photoatlas of Inclusions in Gemstones vol. 2, and Photoatlas of Inclusions in Gemstones vol. 3 |