MOHS Scale of Hardness
Posted June 11, 2014 by Esslinger Staff
MOHS Rating
| MOHS Rating | Gemstone | Mineral Group |
|---|---|---|
| 10 | Diamond | |
| 9 | Ruby , Sapphire | Corundum |
| 8 | Topaz | Topaz |
| 7.5 | Emerald | Beryl |
| 7.5 | Aquamarine | Beryl |
| 7 | Amethyst | Quartz |
| 7 | Amethyst | Quartz |
| 6.5 | Peridot | |
| 5.5 - 6.5 | Opal | |
| 3 | Onyx |
