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Hematine (also magnetic hematite, hemalyke or hemalike) is an artificial magnetic material. Hematine is widely used in jewelry.
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Although it is claimed by many that it is made from ground hematite or iron oxide mixed with a resin, analysis has demonstrated it to be an entirely artificial compound, a barium-strontium ferrite.
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References
Hematine Wikipedia(Text) CC BY-SA