Hardness Test Kit, Scratch Tester Hardness Test Pen, 2-9 Scratch Tester with Storage Box, High Sensitivity, Multi-Faceted Shape, for Industrial Mineral Identification Kit Gem Jade Jewelry

Identify minerals, rocks, and gemstones with scientific confidence using our Professional Mohs Hardness Test Kit. This comprehensive set is the essential field and lab tool for geologists, gemologists, jewelers, and rockhounding enthusiasts. Based on the classic scratch test, this kit allows you to quickly and accurately determine the hardness of a specimen by comparing it against the calibrated points of each pen. Housed in a durable, foam-lined case, this kit provides everything you need to start identifying your finds right away.

• 【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.
• 【HIGH SENSITIVITY】: The metal hardness tester has high accuracy, multi-faceted shape and careful processing, making it more convenient and durable to use.
• 【PREMIUM MATERIAL】: The rock hardness test kit is made of stainless steel, sturdy and durable. There are 8 hardness pens and 8 inspection samples in the box.
• 【INSTRUCTIONS FOR USE】: When using the metal test kit, keep the pen tip at 70° above the ground, press the pen tip, draw a straight line above the object being tested, and determine the hardness level based on the scratches.
• 【WIDE RANGE OF USES】: 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.