| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | aluminium oxide | gemstone industry | Aluminium oxide, also known as corundum, is highly prized in the gemstone industry for creating sapphires and rubies. | 2 |
| 2 | aluminium oxide | China | Aluminium oxide is utilized in traditional Chinese medicine and Ayurvedic preparations. | 1 |
| 3 | aluminium oxide | chemistry research community | Aluminium oxide is utilized as a catalyst in different chemical processes within the chemistry research community. | 1 |