Mohs Hardness Test Kit, Scratch Tester Hardness Test Pen, 2-9 Scratch Tester, with Storage Box, for Industrial Mineral Identification Kit Gem Jade Jewelry

Features

• Excellent Quality: We offer you this impeccable hardness pen. It is more convenient and durable to use.
• Hardness test kit: It is a multi-faceted shape that has been carefully processed to make it more convenient and durable to use.
• Tips: Forged tips offer superior hardness and precision, allowing you to handle a variety of hard materials with ease and providing greater durability!
• 2-9 Mohs hardness pen set: 2# gypsum, 3# calcite, 4# fluorite, 5# apatite, 6# orthoclase, 7# quartz, 8# topaz, 9# corundum, good texture and appearance Exquisite.
• Wide application: Mohs hardness tester pen, hardness measurement, this hardness test pen is suitable for gems, jade, ceramic tiles, floors, glass, mobile phone screens, minerals, concrete, etc.