| Clue | Source | Date |
|---|---|---|
| Machine that smooths agate, quartz, e.g. | USA Today | 10 Jul 2025 |
| *Spinning machine for polishing a gemstone | Universal | 05 Apr 2023 |
| *Buffing tool for some jewelry-makers | LA Times Daily | 30 Aug 2022 |
| Mineralogy hobbyist's machine | ||
| *Stone shiner given to comedian Chris | ||
| Polishing mechanism |