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Mohs Scale of Gemstone Hardness |
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2-2.5 |
Amber |
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2.5-3.5 |
Chrysocolla |
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3. |
Calcite |
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3.5 |
Coral |
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3.5-4 |
Malachite, Rhodocrosite |
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3.5-4.5 |
Pearl |
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4. |
Flourite |
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4.5-7. |
Kyanite |
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5. |
Apatite |
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5-5.5 |
Lapis Lazuli |
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5-6 |
Turquoise, Hematite |
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5.5-6.5 |
Opal, Rhodonite |
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6. |
Feldspar (Moonstone, Labradorite) |
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6-6.5 |
Prehnite |
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6-7. |
Chrysoprase |
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6-7.2 |
Sunstone |
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6-7.5 |
Garnet (Rhodolite, Tsavorite, Dementoid, Spessartite, Mandarin) |
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6.5 |
Tanzanite |
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6.5-7 |
Peridot, Kunzite, Jade |
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7. |
Quartz (Amethyst, Citrine, Carnelian, Smokey, Lemon, Rose, Prasiolite, Chalcedony, Onyx, Agate, Tiger’s Eye) |
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7-7.5 |
Iolite, Tourmaline |
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7.5-8 |
Beryl (Emerald, Aquamarine, Bixbite, Alexandrite, Morganite) |
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8. |
Topaz, Spinel |
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9. |
Corundum (Ruby, Sapphire) |
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10. |
Diamond |
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Findings Crash Course