Gemstone Hardness

"Gemstone Hardness" is the resistance of a Gemstone to being scratched

The table below shows the hardness of popular gemstones on the Mohs' Scale.The Mohs' Scale runs from 1 to 10. The position of a gem on the scale depends on its' ability to scratch gems rated lower. We can see diamonds at the top, meaning, no other gem can scratch a diamond. Please note, this does not mean a diamond cannot be broken or chippen. Diamonds are hard but not tough ( refer to our blog for more information ). Also remember diamonds can scratch each other.
Our Blog Posts will give you in-depth methods to use this scale when decided what type of jewellery to buy. This Scale is not a measure of a gems ability to resist chipping or breaking. This scale is about the ability of resisting scratches.
Natural Diamond Diamond 10
Natural Ruby Ruby 9
Star Ruby Star Ruby 9
Sapphire

Sapphire

9
Star Sapphire Star Sapphire 9
Color Change Alexandrite Alexandrite 8.5
Alexandite Cat's Eye Alexandrite Cat's Eye 8.5
Chrysoberyl Chrysoberyl 8.5
Chrysoberyl Cat's Eye Chrysoberyl Cat's Eye 8.5
Vanadium Chrysoberyl Chrysoberyl Vanadium 8.5
Taaffeite Taaffeite 8-8.5
Spinel Spinel 8
Topaz Tpoaz 8
Imperial Topaz Imperial Topaz  8
Pezzotaite Pezzotaite 8
Emerald Emerald 7.5-8
Enstatite Enstatite 7.5-8
Aquamarine Aquamarine 7.5-8
Morganite Morganite 7.5-8
Goshenite Beryl Goshenite Beryl 7.5-8
Golden Beryl Golden Beryl 7.5-8
Painite Painite 7.5-8
Phenakite Phenakite 7.5-8
Red Beryl Red Beryl (Bixbite) 7.5-8
Andalusite Andalusite 7.5
Euclase Euclase 7.5
Grandidierite Grandidierite 7.5
Hambergite Hambergite 7.5
Dumortierite Dumortierite 7-8.5
Almandine Garnet Almandine Garnet 7-7.5
Danburite Danburite 7-7.5
Iolite Iolite 7-7.5
Pyrope Garnet Pyrope Garnet 7-7.5
Spessartite Garnet Spessartite Garnet 7-7.5
Rhodolite Garnet Rhodolite Garnet 7-7.5
Color Change Garnet Colour-Change Garnet 7-7.5
Chrome Tourmaline Chrome Tourmaline 7-7.5
Malaia Garnet Malaia Garnet 7-7.5
Paraiba Tourmaline Paraiba Tourmaline 7-7.5
Rubellite Tourmaline Rubellite Tourmaline 7-7.5
Tourmaline Tourmaline 7-7.5
Uvarovite Garnet Uvarovite Garnet 7-7.5
Amethyst Amethyst Quartz 7
Aventurine Aventurine Quartz 7
Ametrine Ametrine Quartz 7
Citrine Citrine Quartz 7
Gem Silica Gem Silica 7
Kornerupine Kornerupine 7
Rock Crystal Rock Crystal 7
Rose Quartz Rose Quartz 7
Smoky Quartz Smoky Quartz 7
Jeremejevite Jeremejevite 6.5-7.5
Sillimanite Sillimanite 6.5-7.5
Zircon Zircon 6.5-7.5
Agate Agate 6.5-7
Axinite Axinite 6.5-7
Bloodstone Bloodstone 6.5-7
Carnelian Carnelian 6.5-7
Chalcedony Chalcedony 6.5-7
Chrome Chalcedony Chrome Chalcedony 6.5-7
Chrysoprase Chrysoprase 6.5-7
Demantoid Garnet Demantoid Garnet 6.5-7
Diaspore Diaspore 6.5-7
Grossular Garnet Grossular Garnet 6.5-7
Hessonite Garnet Hessonite Garnet 6.5-7
Hiddenite Hiddenite 6.5-7
Jadeite Jade Jadeite Jade 6.5-7
Jasper Jasper 6.5-7
Mali Garnet Mali Garnet 6.5-7
Kunzite Kunzite 6.5-7
Leuco Garnet Leuco Garnet 6.5-7
Onyx Onyx 6.5-7
Peridot Peridot 6.5-7
Serendibite Serendibite 6.5-7
Sinhalite Sinhalite 6.5-7
Spodumene Spodumene 6.5-7
Tanzanite Tanzanite 6.5-7
Tsavorite Garnet Tsavorite Garnet 6.5-7
Idocrase (Vesuvianite) Idocrase 6.5
Cassiterite Cassiterite 6-7
Epidote Epidote 6-7
Maw-Sit-Sit Maw-Sit-Sit 6-7
Unakite Unakite 6-7
Amazonite Amazonite 6-6.5
Andesine Andesine 6-6.5
Oligoclase Oligoclase 6-6.5
Benitoite Benitoite 6-6.5
Labradorite Labradorite 6-6.5
Moonstone Moonstone 6-6.5
Nephrite Jade Nephrite Jade 6-6.5
Orthoclase Orthoclase 6-6.5
Petalite Petalite 6-6.5
Prehnite Prehnite 6-6.5
Scheelite Scheelite 6-6.5
Sugilite Sugilite 6-6.5 
Sunstone Sunstone 6-6.5
Zoisite Zoisite 6-6.5
Amblygonite Amblygonite 6
Clinohumite Clinohumite 6
Hematite Hematite 5.5-6.5
Mexican Fire Opal Fire Opal 5.5-6.5
Opal Opal 5.5-6.5
Rhodonite Rhodonite 5.5-6.5
Actinolite Actinolite 5.5-6
Azurite Azurite 5.5-6
Hackmanite Hackmanite 5.5-6
Hauyne Hauyne 5.5-6
Scapolite Scapolite 5.5-6
Sodalite Sodalite 5.5-6
Moldavite Moldavite 5.5
Diopside Diopside 5-6
Chrome Diopside Chrome Diopside 5-6
Lapis Lazuli Lapis Lazuli 5-6
Poudretteite Poudretteite 5-6
Turquoise Turquoise 5-6
Brazilianite Brazilianite 5.5
Datolite Datolite 5-5.5
Eudialyte Eudialyte 5-5.5
Obsidian Obsidian 5-5.5
Sphene (Titanite) Sphene 5-5.5
Apatite Apatite 5
Cat's Eye Apatite Cat's Eye Apatite 5
Dioptase Dioptase 5
Hemimorphite Hemimorphite 5
Smithsonite Smithsonite 5
Charoite Charoite 4.5-5
Gaspeite Gaspeite 4.5-5
Larimar Larimar 4.5-5
Kyanite Kyanite 4-7
Bastnasite Bastnasite 4-5
Carletonite Carletonite 4-4.5
Ammolite Ammolite (Korite) 4
Fluorite Fluorite 4
Rhodochrosite Rhodochrosite 4
Williamsite Williamsite 4
Aragonite Aragonite 3.5-4
Azurite Azurite 3.5-4
Cuprite Cuprite 3.5-4
Malachite Malachite 3.5-4
Sphalerite Sphalerite 3.5-4
Coral Coral 3-4
Barite Barite 3-3.5
Celestine Celestine 3-3.5
Cerussite Cerussite 3-3.5
Howlite Howlite 3-3.5
Calcite Calcite  3
Cobaltocalcite Cobaltocalcite 3
Pearl Pearl  2.5-4.5
Jet Jet 2.5-4
Lepidolite Lepidolite 2.5-3
Chrysocolla Chrysocolla 2-4
Amber Amber  2-2.5
Cinnabar Cinnabar 2-2.5
Ulexite Ulexite  2-2.5