Deluxe Rock Hardness Pick Set

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This is a complete set of double-ended rock hardness picks, Mohs 2 through 9, in a nice wooden carrying case.  Comes with a sharpening stone, magnet, glass plate, streak plate and complete instructions.  This is the easy and precise way to determine the hardness of a rock or glass.  Invaluable in assembling batches of tumbling rough with the same hardness.

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