| Name | Mahogany Obsidian |
| Class | Silicates |
| Category | Volcanic rock |
| Crystal system | Amorphous |
| Chemical composition | Silicon dioxide (SiO₂) with iron and magnesium inclusions |
| Hardness (Mohs scale) | 5 to 6 |
| Transparency | Opaque |
| Geographical origin | Mexico, United States, Japan, Iceland, Guatemala |






















































































































































































































