The piece of corundum is awarded for solving a conundrum of difficulty 9/10. Total in circulation: 457,609.
This table shows the players who have collected the most pieces of corundum.
| # | Player | ![]() |
|---|---|---|
| 1st | Chas Maxwell | 22,273 |
| 2nd | Chris Hare | 21,140 |
| 3rd | Jack Slane | 16,648 |
| 4th | Zohaib Rehan | 14,244 |
| 5th | Ahmed M | 12,352 |
| 6th | Hazel Drury | 10,686 |
| 7th | Stephen R | 10,491 |
| 8th | Matt OC | 10,282 |
| 9th | Tim Down | 9,630 |
| 10th | Jack Worsley | 9,382 |
| 11th | Tom Cappleman | 7,976 |
| 12th | Johnny Canuck | 7,965 |
| 13th | Mark Murray | 7,528 |
| 14th | Ross K | 6,923 |
| 15th | James Judge | 6,757 |
| 16th | Dylan Taylor | 6,042 |
| 17th | John Beresford | 5,888 |
| 18th | Ronan M Higginson | 5,517 |
| 19th | Luke Johnson-Davies | 5,425 |
| 20th | Dan Johnson | 5,033 |
| 21st | Elwin Carlos | 5,020 |
| 22nd | David Barnard | 4,999 |
| 23rd | Rob Foster | 4,822 |
| 24th | Sean D | 4,723 |
| 25th | Matthew Brockwell | 4,701 |
| 1–25 of 853 | Next 25 › | ||
Statistics last updated about 4 hours ago at 2026-08-19 01:05:47.
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