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 |