| gypsum |
| hair and hair components as materials |
| hair by composition or origin |
| hair by form as material |
| hide (collagenous material) |
| igneous rock |
| igneous rock by composition |
| igneous rock by composition: chemical |
| igneous rock by composition: physical |
| igneous rock by origin |
| inorganic material/material inorgánico |
| intermediate igneous rock |
| keratin |
| keratinous material |
| landscapes (environments) |
| lead glass |
| leaf (plant material) |
| lighting device components |
| lipid |
| living organisms (entities) |
| malvales |
| materials (substances)/materiales |
| materials by composition/materiales por composición |
| materials by form |