Hematine

Hematine (also magnetic hematite, hemalyke or hemalike) is an artificial magnetic material.

[1] Hematine is widely used in jewelry.

[citation needed] Although it is claimed by many that it is made from ground hematite or iron oxide mixed with a resin, analysis (of one object) has demonstrated it to be an entirely artificial compound, a barium-strontium ferrite.

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