Tri-color tourmaline rough from Nigeria. © Dan Stair Custom Gemstones. Used with permission.
Red Tourmaline Rough from Nigeria
Tri-color tourmaline rough from Nigeria. © Dan Stair Custom Gemstones. Used with permission.
Article: Tourmaline Gem, Price, and Jewelry Information
Credit: Dan Stair Custom Gemstones
| Gemstone | Tourmaline |
| Natural or man made | Natural |
| Origin | Nigeria |
| Gem State | Rough |
| Color | Red, Green, Colorless |
| Transparency | Transparent |
| Multi-color | Tri-color |