| Clue | Source | Date |
|---|---|---|
| Settle resolution that may help Polish | The Times Cryptic | 19 Jun 2025 |
| Coarse sandstone | The Telegraph Quick | 17 Jun 2023 |
| Hardness of some northerners who won't be ground down? | The Guardian Quick | 11 Mar 2022 |
| Coarse sandstone used for polishing | The Telegraph General Knowledge | 23 Jul 2017 |
| Coarse sandstone from a county in northern England used for polishing | The Telegraph General Knowledge | 10 Jan 2016 |