polished abalone shell
pearl & abalone shell necklace in sterling silver
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| composition | calcium carbonate |
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| other accepted names | ear shell |
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| color | nacre-formed iridescence |
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| color source | caused by light being refracted within the crystal layers of the shell, as well as diet and genetic factors |
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| significant sources | off the coasts of California, China and Japan |
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| MOH scale | 2.5 |
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| care and treatment | Whether in a relatively untreated state, or highly polished, abalone can easily scratch. Store it where it won't get jostled against other pieces of jewelry (especially earrings with posts). Clean with water and a soft cloth. Always put on jewelry after applying hair spray or perfume. |
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