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

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

• 【Mohs Hardness Scale】 Covers standard Mohs hardness levels from 2 to 9. Features precise mineral points: 2# gypsum, 3# calcite, 4# fluorite, 5# apatite, 6# orthoclase, 7# quartz, 8# topaz, and 9# corundum for expert scratch testing.
• 【Premium Material Kit】 Built from high-grade stainless steel for professional, heavy-duty durability. This comprehensive kit includes 8 precision-tipped hardness tester pens and 8 calibrated mineral testing samples in a secure box.
• 【High Sensitivity Design】 Engineered with maximum accuracy and a multi-faceted ergonomic body. Each metal tester pen undergoes careful mechanical processing to ensure precise scratching, superior control, and long service life.
• 【Wide Material Utility】 Highly versatile scratch testing set used to determine the exact hardness of gemstones, jade, ceramic tiles, concrete floors, architectural glass, mobile phone screens, minerals, and advanced composites.
• 【Clear Instructions for Use】 Hold the tester pen tip at a 70° angle to the target surface. Apply firm downward pressure to draw a straight line across the specimen, then accurately determine the hardness level based on visible scratches.