| Matérials | Permittivity |
| Clays (*) | 8 - 12 |
| Basalt/Andesite | 5 - 7 |
| Dry limestone (*) | 6 - 8 |
| Granites (*) | 5 - 6.5 |
| Sandstone (*) | 4 - 5 |
| Quartzites (*) | 4 - 5 |
| Sands | 4 - 6 |
| Sands saturated with fresh water | 30 |
| Salt | 5 - 6 |
| Ice cream | 3.2 |
| Fresh water | 81 |
| Seawater | 77 |
| Asphalt/Bitumen | 3 - 6 |
| Concrete/Masonry | 4 - 12 variable |