iolite & moonstone necklace
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| composition | a complex magnesium aluminum |
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| name source | from the Greek ios meaning "violet," and lithos, meaning "stone" |
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| other accepted names | cordierite, dichroite, lynx sapphire, bloodshot iolite |
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| historical aliases | water sapphire (no longer accepted) |
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| folkloric aliases | "Viking's compass" |
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| color | light to dark blue and violet to colorless |
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| color source | iron and magnesium |
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| significant sources | Brazil, India, Madagascar, Myanmar (Burma), Sri Lanka |
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| MOH scale | 7 - 7.5 |
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| care and treatment | Wash in warm soapy water or clean in an ultra sonic jewelry cleaner. |
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