Agate
Hardness: 7
Almandine
Hardness: 7.5
Amazonite
Hardness: 6
Amethyst
Hardness: 7
Andesine
Hardness: 6
Andradite
Hardness: 6.5
Anglesite
Hardness: 2.5
Anhydrite
Hardness: 3
Apatite
Hardness: 5
Aquamarine
Hardness: 7.5
Azurite
Hardness: 3.5
Barite
Hardness: 3
Bornite
Hardness: 3
Calcite
Hardness: 3
Carnallite
Hardness: 2
Carnelian
Hardness: 7
Cassiterite
Hardness: 6
Celestine
Hardness: 3
Chalcedony
Hardness: 6.5
Chalcopyrite
Hardness: 3.5
Cinnabar
Hardness: 2
Citrine
Hardness: 7
Color-change Sapphire
Hardness: 9
Corundum
Hardness: 9
Demantoid
Hardness: 6.5
Diamond
Hardness: 10
Dolomite
Hardness: 3.5
Emerald
Hardness: 7.5
Erythrite
Hardness: 1.5
Fayalite
Hardness: 6.5
Fluorite
Hardness: 4
Forsterite
Hardness: 6.5
Galena
Hardness: 2.5
Goshenite
Hardness: 7.5
Green Beryl
Hardness: 7.5
Grossular
Hardness: 7
Gypsum
Hardness: 2
Halite
Hardness: 2
Heliodor
Hardness: 7.5
Hematite
Hardness: 5.5
Hessonite
Hardness: 7
Ilmenite
Hardness: 5.5
Labradorite
Hardness: 6.5
Lazulite
Hardness: 5
Linarite
Hardness: 3.5
Magnetite
Hardness: 6
Malachite
Hardness: 3.5
Marcasite
Hardness: 6.5
Milky Quartz
Hardness: 7
Monazite
Hardness: 5
Moonstone
Hardness: 6
Morganite
Hardness: 7.5
Oligoclase
Hardness: 6
Onyx
Hardness: 7
Orpiment
Hardness: 1.5
Orthoclase
Hardness: 6
Padparadscha
Hardness: 9
Peridot
Hardness: 6.5
Pyrite
Hardness: 6.5
Pyrope
Hardness: 7.5
Realgar
Hardness: 1.5
Red Beryl
Hardness: 7.5
Rhodochrosite
Hardness: 3.5
Rock Crystal
Hardness: 7
Rose Quartz
Hardness: 7
Ruby
Hardness: 9
Rutilated Quartz
Hardness: 7
Rutile
Hardness: 6
Sapphire
Hardness: 9
Selenite
Hardness: 2
Smithsonite
Hardness: 4.5
Smoky Quartz
Hardness: 7
Spessartine
Hardness: 7.5
Spinel
Hardness: 7.5
Star Ruby
Hardness: 9
Star Sapphire
Hardness: 9
Sunstone
Hardness: 6.5
Sylvite
Hardness: 2
Tsavorite
Hardness: 7.5
Turquoise
Hardness: 5
Uvarovite
Hardness: 7.5
Variscite
Hardness: 4.5
Watermelon Tourmaline
Hardness: 7
Wavellite
Hardness: 4.5
Zincite
Hardness: 4
Zircon
Hardness: 6.5