Materials
- Obsidian4,153 objects
- Chert278 objects
- Basalt (basic igneous rock)100 objects
- Flint (rock)55 objects
- Quartz (mineral)27 objects
- Quartzite23 objects
- Siliceous rock17 objects
- Opal glass15 objects
- Petrified wood6 objects
- Sandstone5 objects
- Slate (rock)3 objects
- Bone (material)2 objects
- Ceramic (material)2 objects
- Chalcedony2 objects
- Asphalt (bituminous material)1 objects
- Clay1 objects
- Gypsum1 objects
- Hornfels1 objects
- Iron (metal)1 objects
- Obsidian (387)1 objects