Black Mohs Hardness Gem Testing Instruments For Scratching
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Detailed Product Description
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Genuine tools Testing Jade and Gemstone Mohs Hardness Level 5-9 Model Number: FMH-5
Hardness Pencil is used for scratching the rough gemstones. If there are scratches, the gemstone hardness is lower than that hardness marked on the pens.
Applications:
Attention: The use of the hardness pencil is damaged to the sample and the hardness pen itself. Please use it with caution! ! ! ! When using, please scratch the sample lightly with a hardness pencil. Please select the part where the sample is not conspicuous or not the main surface for testing. Please do not choose the polished surface for faceted and curved gemstones.
It includes:
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| Product Tags: Mohs Hardness Gem Testing Instruments Black Mohs Hardness Pencil Scratching Mohs Hardness Pencil |
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