| Label | Id | |
|---|---|---|
| bauxite | D000537 | |
| ceramic, alumina | D000537 | |
| corundum | D000537 | |
| alumina ceramic | D000537 | |
| aluminum oxide | D000537 | |
| aluminum oxide (AlO2) | D000537 | |
| aluminum oxide (al130o40) | D000537 | |
| aluminum oxide (al2o) | D000537 | |
| aluminum oxide (al2o3) | D000537 | |
| oxide, aluminum | D000537 | |
| sapphire | D000537 |