| valuable rocks and minerals | 1.74 | 0.5 | 4218 | 27 | 8 |
| most valuable rocks and minerals | 0.73 | 1 | 5556 | 32 | 67 |
| rocks that contain valuable minerals | 0.13 | 0.8 | 8791 | 36 | 58 |
| most valuable oregon rocks and minerals | 0.91 | 0.2 | 6075 | 39 | 21 |
| list of valuable rocks and minerals | 1.12 | 0.5 | 6826 | 35 | 18 |
| rocks containing valuable minerals | 1.99 | 0.5 | 4330 | 34 | 78 |
| what rocks contain valuable minerals | 1.49 | 0.2 | 5082 | 36 | 13 |
| what rocks are valuable | 1.54 | 0.6 | 3496 | 23 | 69 |
| which rock contains valuable minerals | 0.56 | 0.7 | 852 | 37 | 44 |
| valuable rocks and stones | 1.6 | 0.9 | 2581 | 25 | 87 |
| value of rocks and minerals | 1.77 | 0.8 | 4991 | 27 | 31 |
| natural rock containing valuable minerals | 0.78 | 1 | 2276 | 41 | 59 |
| rocks and minerals worth money | 0.55 | 0.5 | 1212 | 30 | 1 |
| list of rocks and minerals by value | 1.39 | 0.1 | 7685 | 35 | 94 |
| what makes certain rocks valuable | 1.93 | 0.9 | 2164 | 33 | 80 |
| list of valuable minerals | 1.39 | 0.4 | 7875 | 25 | 36 |
| interesting rocks and minerals | 1.97 | 0.1 | 1764 | 30 | 2 |
| the most valuable rocks | 1.43 | 1 | 8119 | 23 | 73 |
| what are the most valuable minerals | 0.67 | 0.7 | 5761 | 35 | 48 |
| source of valuable rock | 0.62 | 0.9 | 1281 | 23 | 65 |
| top ten most valuable minerals | 0.77 | 0.2 | 8281 | 30 | 5 |
| most valuable minerals on earth | 0.61 | 0.5 | 2570 | 31 | 52 |
