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Jewelry |
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This
simplified gemstone hardness chart summarizes the resistance
to scratching of selected jewellery gemstones. The chart
also lists official birthstones for each month. |
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3.5 |
Azurite |
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Malachite |
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Pearl |
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June |
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Generally considered too soft for gemstones |
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Apatite |
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5.5 |
Diopside |
Chrome Diopside |
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5.5 |
Turquoise |
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December |
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Jade |
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Labradorite |
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Moonstone |
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Opal |
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October |
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6.5 |
Agate |
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6.5 |
Kunzite |
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6.5 |
Tanzanite |
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6.5 |
Onyx |
Chalcedony |
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6.5 |
Peridot |
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August |
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Amethyst |
Quartz |
February |
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Citrine |
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Rose Quartz |
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Tiger Eye |
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Tourmaline |
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7.5 |
Aquamarine |
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March |
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7.5 |
Garnet |
Tsavorite |
January |
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7.5 |
Zircon |
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Spinel |
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Topaz |
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November |
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8.5 |
Alexandrite |
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8.5 |
Emerald |
Green beryl |
May |
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Ruby |
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July |
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Sapphire |
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September |
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Diamond |
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April |
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Any gemstone listed above can be scratched by any gemstone with the same hardness, or any harder gemstone farther down the list. |
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Although the author has tried to be as accurate as
possible, errors are possible. |
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Vaughn's Summaries (One-Pagers) ©2005 Vaughn Aubuchon ... All Rights Reserved http://www.vaughns-1-pagers.com This Vaughns 1-Pagers Gemstone Hardness Summary Chart web page was updated on 2006-04-29. |