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Mohs scale of gem stone hardness

Gemstone Properties

Gem or Mineral Hardness Gem or Mineral Hardness Agate 7.00 Labradorite 6.00 Alexandrite 8.50 Lapis Lazuli 5.50 Almandine Garnet 7.50 Mabe Shell* 2.50 Amber* 2.50 Malachite 4.00 Amethyst 7.00 Mandarin Garnet 7.00 Ametrine 7.00 Milarite 5.50 Andalusite 7.50 Moldavite 5.00 Andradite 6.50 Moonstone 6.00 Apatite 5.00 Morganite 7.50 Aquamarine 7.50 Nephrite Jade 6.50 Aventurine 7.00 Obsidian 5.00 Azurite 3.50  Onyx 7.00 Black Opal 6.00 Opal 6.00 Bloodstone 7.00 Orthoclase 6.00 Blue Chalcedony 7.00  Padparadscha 9.00 Blue Sapphire 9.00  Pearl* 3.00 Blue Topaz 8.00  Peridot 6.50 Calcite 3.00 Petrified Wood 7.00 Carnelian 7.00 Pyrope 7.25 Cat's Eye Chrysoberyl 8.50  Quartz Crystal 7.00 Cat's Eye Quartz 7.00  Red Beryl 7.50 Chrysoprase 7.00  Rhodochrosite 4.00 Citrine 7.00  Rhodolite 7.00 Coral* 3.50 Rhodonite 6.00 Danburite 7.50 Rose Quartz 7.00 Demantoid 6.50 Rubellite 7.50 Diamond 10.00  Ruby 9.00 Diopside 5.50 Sapphire 9.00 Dioptase 5.00 Sard 7.00 Emerald 7.50  Sardonyx 7.00 Fire Opal 6.50 Scapolite 6.00 Fluorite 4.00  Serpentine 2.50-5.00 Goldenite 7.00  Sillimanite 7.50 Goshenite 7.50 Smoky Quartz 7.00 Grossular Garnet 7.00  Sodalite 5.50 Heliodor 7.50 Spectrolite 6.00 Hematite 6.50  Spessartine 7.00 Hessonite 7.25  Spinel 8.00 Hiddenite 7.00 Sunstone 6.00 Hyacinth 7.50  Tanzanite 6.50 Indicolite 7.50 Tiger's Eye Quartz 7.00 Iolite 7.00 Titanite 5.00 Ivory* 2.50 Topaz 8.00 Jadeite Jade 7.00 Tortoiseshell* 2.50 Jasper 7.00 Tourmaline 7.50 Jet* 2.50 Tsavorite 7.00 Kunzite 7.00 Turquoise 6.00 Kyanite 7.00/5.00 Uvarovite Garnet 7.50     Zircon 7.50 *not technically a gem or mineral, but organic matter

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