Gemstone Hardness

Moh's scale of gemstone hardness 

We all know that diamonds are the hardest natural gemstone, but how do you other favorite gems stand up?

2-2.5 Amber 

2.5-3.5 Chrysocolla 

3 Calcite 

3.5 Coral

3.5-4 Malachite, Rhodocrosite 

3.5-4.5 Pearl 

4 Flourite 

4.5-7 Kyanite 

5 Apatite 

5-5.5 Lapis Lazuli 

5-6 Turquoise, Hematite 

5.5-6.5 Opal, Rhodonite 

6 Feldspar (Moonstone, Labradorite) 

6-6.5 Prehnite 

6-7 Chrysoprase 

6-7.2 Sunstone 

6-7.5 Garnet (Rhodolite, Tsavorite, Dementoid, Spessartite, Mandarin) 

6.5 Tanzanite 

6.5-7 Peridot, Kunzite, Jade 

7 Quartz (Amethyst, Citrine, Carnelian, Smokey, Lemon, Rose, Prasiolite, Chalcedony, Onyx, Agate, Tiger’s Eye) 

7-7.5 Iolite, Tourmaline 

7.5-8 Beryl (Emerald, Aquamarine, Bixbite, Alexandrite, Morganite)

Topaz, Spinel 

9 Corundum (Ruby, Sapphire) 

10 Diamond