hematite nodule
aqua beryl and hematite choker
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| composition | compact form of iron oxide |
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| name source | from the Greek haema, meaning "blood-like" from the fact that it leaves a blood (haimatos) red trace on porcelain, and the Greek ethite, meaning "to stop" |
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| other accepted names | black diamond, black pearl, Alaskan black diamond, haematite |
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| historical aliases | bloodstone |
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| folkloric aliases | "the lesson stone," "the stone of mental mastery" |
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| color | steel or silver gray to black and red to brown in earthy forms - sometimes tarnished with iridescent colors when in a hydrated form (called turgite) |
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| color source | iron oxide |
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| significant sources | Australia, Brazil, England, Mexico, and US (Lake Superior region) |
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| MOH scale | 5.5 - 6.5 |
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| care and treatment | Wash in warm soapy water or clean in ultra sonic jewelry cleaner. |
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