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MOHS Scale of hardness
MOHS Scale of hardness
1 = Softest
10 = Hardest
Crystal Hardness
Amethyst 7
Ametrine 7
Moss Agate 7
Blue Lace Agate 7
Amber 2
Aquamarine 7.5 - 8
Green Aventurine 7
Bloodstone 7
Carnelian 7
Blue Calcite 3
Citrine 7
Chrysoprase 7
Charoite 5 - 6
Diamond 10
Emerald 7.5 – 8
Fluorite 4
Green Goldstone 5.5
Garnet 6.5 – 7.5
White Howlite 3.5
Hematite 5 - 6
Herkimer Diamond 7
Jade in Nephrite 6 – 6.5
New Jade 6.5 - 7
Jasper 6.5 - 7
Jet 2.5
Kyanite 4 - 7
Lapis Lazuli 5.5
Larimar 5 - 7
Lepidolite 2.5 - 4
Malachite 5.5 – 6.5
Moonstone 6 – 6.5
Mother of Pearl 3.5
Opal 6
Black Onyx 6.5 - 7
Black Obsidian 6
Snowflake Obsidian 6
Peridot 6.5
Rhodochrosite 3.5 – 4.5
Rhodonite 5.5 – 6.5
Ruby 9
Ruby in Fuschite 6+
Rose Quartz 7
Rock Crystal 7
Sardonyx 7
Sapphire 9
Smoky Quartz 7
Sodalite 5.5 - 6
Sugilite 5.5 – 6.5
Sunstone 6 – 6.5
Topaz 8
Tigers Eye 7
Turquoise 5 - 6
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