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Q & A details -What are hard metals that are naturally dark black in color?
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What are hard metals that are naturally dark black in color?

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What are hard metals that are naturally dark black in color?
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  • 0861788249

    0861788249 2017-01-06 10:15:25

    Tungsten carbide and hematite/magnetite come to mind. Hematitie and magnetite aren't really proper metals, but they are used in jewelry and contain a lot of iron.

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