Gemstone Mohs HardnessHardness is defined as resistance to scratching and is graded between 1 (softest) and 10 (hardest) using the Mohs scale of mineral hardness. Diamond has a hardness of 10 (hardest) on this scale ,it is the hardest natural material known. The gemstone hardness in this chart would help reduce damages while mounting a gemstone in jewellery, and endure the occasional hard knock or abrasion. The Moh’s hardness scale was created by a German mineralogist Friedrich Mohs(1773-1839), it mainly measures the scratch resistance of various minerals, through the ability of a harder material to scratch or abrade a softer mineral. There are ten materials on the Moh’s scale and they are listed from soft to hard, besides their rank, they are given an absolute hardness score. For instance, talc is the softest mineral and has an absolute hardness score of 1, Diamonds are the hardest material known to man and have an absolute hardness score of 10. Here is a list of minerals from softest to hardest along with their absolute hardness number:
Gemstones Hardness Chart | Gem | Hardness | Gem | Hardness |
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| Diamond | 10 | Jasper | 6.5 - 7 | | Star Sapphire | 9 | Chrysoprase | 6.5 - 7 | | Color-Change Sapphire | 9 | Dendritic Agate | 6.5 - 7 | | Ruby | 9 | Spessartite Garnet | 6.5 - 7.5 | | Sapphire | 9 | Fire Agate | 6.5 - 7 | | Star Ruby | 9 | Grossularite Garnet | 6.5 - 7.5 | | Chrysoberyl Cat's Eye | 8.5 | Star Rose Quartz | 6.5 - 7 | | Alexandrite | 8.5 | Color-Change Garnet | 6.5 - 7.5 | | Chrysoberyl | 8.5 | Agate | 6.5 - 7 | | Mystic Topaz | 8 | Color-Change Diaspore | 6.5 - 7 | | Imperial Topaz | 8 | Clinohumite | 6 | | Spinel | 8 | Prehnite | 6 - 6.5 | | Topaz | 8 | Labradorite | 6 - 6.5 | | Azotic Topaz | 8 | Cassiterite | 6 - 7 | | Rutile Topaz | 8 | Nephrite Jade | 6 - 6.5 | | Beryl | 7.5 - 8 | Sunstone | 6 - 6.5 | | Hambergite | 7.5 | Moonstone | 6 - 6.5 | | Goshenite | 7.5 - 8 | Maw-Sit-Sit | 6 - 7 | | Morganite | 7.5 - 8 | Kyanite | 6 - 7 | | Emerald | 7.5 - 8 | Jadeite | 6 - 6.5 | | Cat's Eye Aquamarine | 7.5 - 8 | Andesine Labradorite | 6 - 6.5 | | Andalusite | 7.5 | Star Moonstone | 6 - 6.5 | | Aquamarine | 7.5 - 8 | Rainbow Moonstone | 6 - 6.5 | | Paraiba Tourmaline | 7 - 7.5 | Rainbow Pyrite | 6 - 6.5 | | Strawberry Quartz | 7 | Orthoclase | 6 - 6.5 | | Quartz Cat's Eye | 7 | Amazonite | 6 - 6.5 | | Kunzite | 7 | Sugilite | 6 - 6.5 | | Aventurine | 7 | Star Sunstone | 6 - 6.5 | | Rutile Quartz | 7 | Moldavite | 5.5 | | Chrome Tourmaline | 7 - 7.5 | Moss Opal | 5.5 - 6.5 | | Iolite | 7 - 7.5 | Sodalite | 5.5 - 6 | | Danburite | 7 - 7.5 | Rhodonite | 5.5 - 6.5 | | Smoky Quartz | 7 | Boulder Opal | 5.5 - 6.5 | | Rubellite Tourmaline | 7 - 7.5 | Fire Opal | 5.5 - 6.5 | | Demantoid Garnet | 7 - 7.5 | Hematite | 5.5 - 6.5 | | Amethyst | 7 | Cat's Eye Scapolite | 5.5 - 6 | | Cat's Eye Tourmaline | 7 - 7.5 | Hackmanite | 5.5 - 6 | | Quartz | 7 | Nuumite | 5.5 - 6 | | Tourmaline | 7 - 7.5 | Scapolite | 5.5 - 6 | | Dumortierite Quartz | 7 - 8.5 | Opal | 5.5 - 6.5 | | Star Lemon Quartz | 7 | Opal Doublet | 5.5 - 6.5 | | Rose Quartz | 7 | Smithsonite | 5 | | Citrine | 7 | Snowflake Obsidian | 5 - 5.5 | | Ametrine | 7 | Sphene | 5 - 5.5 | | Mystic Quartz | 7 | Lapis Lazuli | 5 - 6 | | Tsavorite Garnet | 6.5 - 7.5 | Tremolite-Hexagonite | 5 - 6 | | Onyx | 6.5 - 7 | Star Diopside | 5 - 6 | | Peanut Wood | 6.5 - 7 | Cat's Eye Apatite | 5 | | Tiger's Eye | 6.5 - 7 | Obsidian | 5 - 5.5 | | Sillimanite Cat's Eye | 6.5 - 7.5 | Turquoise | 5 - 6 | | Ruby-Zoisite | 6.5 - 7 | Tashmarine Diopside | 5 - 6 | | Hiddenite | 6.5 - 7 | Hemimorphite | 5 | | Zircon | 6.5 - 7.5 | Apatite | 5 | | Bloodstone | 6.5 - 7 | Chrome Diopside | 5 - 6 | | Hessonite Garnet | 6.5 - 7.5 | Gaspeite | 4.5 - 5 | | Cat's Eye Diaspore | 6.5 - 7 | Charoite | 4.5 - 5 | | Almandine Garnet | 6.5 - 7.5 | Larimar | 4.5 - 5 | | Carnelian | 6.5 - 7 | Fluorite | 4 | | Pyrope Garnet | 6.5 - 7.5 | Variscite | 4 - 5 | | Fossil Coral | 6.5 - 7 | Rhodochrosite | 4 | | Spodumene | 6.5 - 7 | Ammolite | 4 | | Agate Geode | 6.5 - 7 | Sphalerite | 3.5 - 4 | | Star Garnet | 6.5 - 7.5 | Malachite | 3.5 - 4 | | Chalcedony | 6.5 - 7 | Azurite | 3.5 - 4 | | Rhodolite Garnet | 6.5 - 7.5 | Coral | 3 - 4 | | Mali Garnet | 6.5 - 7.5 | Verdite | 3 | | Axinite | 6.5 - 7 | Calcite | 3 | | Idocrase | 6.5 | Pearl | 2.5 - 4.5 | | Melanite | 6.5 - 7 | Lepidolite | 2.5 - 3 | | Tanzanite | 6.5 - 7 | Seraphinite | 2 - 4 | | Tiger's Eye Matrix | 6.5 - 7 | Chrysocolla | 2 - 4 | | Peridot | 6.5 - 7 | Amber | 2 - |
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