| Name | Agate |
| Class | Silicates |
| Category | Microcrystalline quartz |
| Crystal system | Rhombohedral |
| Chemical composition | Silicon dioxide (SiO₂) |
| Hardness (Mohs scale) | 6.5 to 7 |
| Transparency | Translucent to opaque |
| Geographical origin | Brazil, Uruguay, India, United States, Madagascar |






















































































































































































































