Shenzhen Fable Jewellery Technology Co., Ltd.
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Hardness Pencil Set Gem Testing Instruments With 6 Pieces Standard Hardness Testing Pencils
Model Number: FMH-6
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.
It includes:4, Fluorite 5, Apatite 6, Feldspar 7, Quartz 8, Topaz 9, Corundum
Applications:
Gemological labs, gemology schools/institutes, jewelry/gem industry, --etc.
Specification:
| Quantity | 6 Items |
| Application | Testing gemstones hardness |
| Total Size | 170mm*120mm*35mm |
| Total Weight | 180G (With packaging box) |
| Single Size | 104mm*6mm |
| Single Weight | 7G |
| Color | Black |
| Test Range | Mohs 4-9, Can be used to test gem, stone, glass, ceramic and other materials |
| Warranty | One year |
