| Pyrite (n.) A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system |
| Stannite (n.) A mineral of a steel-gray or iron-black color |
| pyrite iron pyrite fool's gold | a common mineral (iron disulfide) that has a pale yellow color |
| stannite tin pyrites | a dark grey mineral with a metallic luster that is a source of tin |