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	Rutile Hardness = 6
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	Jet Hardness = 2.5
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	Morganite Hardness = 7.5
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	Howlite Hardness = 3.5
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	Sardonyx Hardness = 7
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	Platinum Hardness = 4
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	Rhodonite Hardness = 5.5 to 6.5
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	Diopside Hardness = 5 to 6
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	Turquoise Hardness = 5 to 6
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	Spinel Hardness = 8
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	Peridot Hardness = 6.5
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	Spodumene Hardness = 7
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	Garnet Hardness = 6.5 to 7.5
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	Calcite Hardness = 3 (about the hardness of a penny)
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	Titanite Hardness = 5
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	Benitoite Hardness = 6.5
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	Lapis Lazuli Hardness = 6
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	Tugtupite Hardness = 6
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	Scheelite Hardness = 5
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	Heliodor Hardness = 7.5
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	Malachite Hardness = 3.5 to 4
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	Hematite Hardness = 6
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	Corundum Hardness = 9
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	Smithsonite Hardness = 5
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	Moonstone Hardness = 6
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	talc Hardness = 1
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	Olivine - Peridot Hardness = 6.5 to 7
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	Kornerupine Hardness = 6.5
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	Enstatite Hardness = 5.5
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	Quartz Hardness = 7
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	Silver Hardness = 2.5
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	Hauyne Hardness = 6
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	Petalite Hardness = 6
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	Epidote Hardness = 6.5
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	Topaz Hardness = 8
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	Labradorite Hardness = 6 to 6.5
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	Pyrite Hardness = 6
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	Agate Hardness = 7
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	Fire Agate Hardness = 7
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	Tourmaline Hardness = 7 to 7.5
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	Phenakite Hardness = 7.5
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	Diamond Hardness = 10
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	Chrysocolla Hardness = 2 to 4
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	Coral Hardness = 3
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	Andalusite Hardness = 7.5
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	Fluorite Hardness = 4
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	Feldspar Hardness = 6
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	Microcline Hardness = 6
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	Danburite Hardness = 7
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	Sinhalite Hardness = 6.5
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	Sapphire Hardness = 9
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	Kyanite Hardness = 5 and 7 (different hardness on different axes)
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	Gold Hardness = 2.5
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	Chrysoprase Hardness = 7
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	Amethyst Hardness = 7
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	Rhodochrosite Hardness = 4
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	Apatite Hardness = 5
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	Serpentine Hardness = 5
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	Prehnite Hardness = 6
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	Pearl Hardness = 3
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	Iolite Hardness = 7
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	Sphalerite Hardness = 3.5
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	Nephrite Hardness = 5 to 6
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	Jasper Hardness = 7
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	Hypersthene Hardness = 5.5
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	Opal Hardness = 5 to 6
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	Brazilianite Hardness = 5.5
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	Bloodstone Hardness = 7
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	Sodalite Hardness = 5.5 to 6
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	Gypsum Hardness = 2 to 2.5 (roughly the hardness of a fingernail)
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	Taaffeite Hardness = 8
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	Dioptase Hardness = 5
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	Carnelian Hardness = 7
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	Jadeite Hardness = 6.5 to 7 (similar to a steel file)
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	Scapolite Hardness = 6
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	Calcedony Hardness = 7
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	Zoisite Hardness = 6.5
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	Shell Hardness = 2.5
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	Citrine Hardness = 7
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	Ruby Hardness = 9
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	Emerald Hardness = 7.5
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	Agate Hardness = 7
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	Zircon Hardness = 7 to 7.5
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	Tektite - Moldavite Hardness = 5.5 (similar to window glass)
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	Onyx Hardness = 7
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	Sillmanite Hardness = 7.5
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	Beryl Hardness = 7.5 to 8
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	Chrysoberyl Hardness = 8.5
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	Amber Hardness = 2 to 2.5
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	Sphene Hardness = 5
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	Ivory Hardness = 2.5
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	Obsidian Hardness = 5 to 5.5
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	Azurite Hardness = 3.5
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	Datolite Hardness = 5
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	Aquamarine Hardness = 7.5
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