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scratching mohs hardness pencil
Selling leads
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Complete set Mohs Hardness pencil 1-10 Level Testing Jade and Gemstone tools Model Number: FMH-10 Hardness Pencil is used for scratching the rough ...
2026-04-30 00:03:09
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... than that hardness marked on the pens. Applications: Gemological labs, gemology schools/institutes, jewelry/gem industry, --etc. Quantity 5 Items ...
2024-12-09 13:18:55
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..., the gemstone hardness is lower than that hardness marked on the pens. It includes:4, Fluorite 5, Apatite 6, Feldspar 7, Quartz 8, Topaz 9, ...
2024-12-09 13:18:55
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... stone Power supply No need Description and Usage: Those minerals are mounted in five metal pole respectively,use the corner of those mineral to ...
2024-12-09 10:55:50
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...Hardness Level Tester Genuine tools Gemstone Mohs hardness pencil Model Number: FMH-8 Hardness Pencil is used for scratching the rough gemstones. ...
2024-12-09 13:18:55
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