| Rating | Solver | Clue |
|---|---|---|
| QUARTZITE | Hard granular rock | |
| BERYL | Hard rock | |
| DIAMOND | Hard rock | |
| FOSSIL | Hard rock dinosaur | |
| GRANITE | Extremely hard rock | |
| LIMESTONE | Hard sedimentary rock | |
| HEAVY METAL | Hard rock music (5,5) | |
| IRESTONE | Any very hard rock. | |
| SLASH | Cut lead guitarist from hard rock band | |