| Name | Tourmaline Quartz |
| Class | Semi-precious |
| Category | Quartz with black tourmaline (schorl) inclusions |
| Crystal system | Hexagonal |
| Chemical composition | Silicon dioxide (SiO₂) with complex borosilicate inclusions (tourmaline) |
| Hardness (Mohs scale) | 7 |
| Transparency | Translucent to transparent |
| Geographical origin | Brazil, India, Madagascar, United States, South Africa |






















































































































































































































