Hardness of gemstones by Mohs' scale
Acate |
6.5-7 |
Akvamarine |
7.5-8 |
Alabaster |
2 |
Aleksandrite |
8.5 |
Amazonite |
6-6.5 |
Amethyst |
7 |
Atsurite |
3.5-4 |
Beryll |
7.5-8 |
Diopside |
5-6 |
Fluorite |
4 |
Garnet |
6.5-7.5 |
Heliodor |
7.5-8 |
Pearl |
3-4 |
Hematite |
5.5-6.5 |
Silver |
2.5-3 |
Jadeite |
6.5-7 |
Jasper |
6.5-7 |
Carneol |
6.5-7 |
Coral |
3-4 |
Cordierite |
7-7.5 |
Chrysocolla |
2-4 |
Chrysoprase |
6.5-7 |
Gold |
2.5-3 |
Kunzite |
6-7 |
Moonstone |
2.5-3 |
Labradorite |
6-6.5 |
Lazurite |
5-6 |
Malachite |
3.5-4 |
Amber |
2-2.5 |
Morganite |
7.5-8 |
Nefrite |
6-6.5 |
Obsidian |
5-6 |
Opal |
5.5-6.5 |
Peridot |
6.5-7 |
Platinum |
4-4.5 |
Rhodochrosite |
4 |
Rhodonite |
5.5-6.5 |
Ruby |
9 |
Rose quartz |
7 |
Sapphire |
9 |
Smoke quartz |
7 |
Serpentine |
2.5-5 |
Citrine |
7 |
Emerald |
7.5-8 |
Sodalite |
5.5-6 |
Spectrolite |
6-6.5 |
Spinel |
8 |
Tanzanite |
6.5-7 |
Tiger's eye |
7 |
Diamond |
10 |
Topaz |
8 |
Turquoise |
5-6 |
Tourmaline |
7-7.5 |
Rock Crystal |
7 |
Zircon |
6.5-7.5 |