Portable Mohs Hardness Test Kit: Professional Mohs hardness testing kit includes 8 numbered scratch test pens and mineral samples in a sturdy storage case. High Precision Design: Textured metal grip and color-coded aluminum bodies for easy identification, with hardness values ranging from 2 to 9. Excellent Performance: Forged tips offer superior hardness and precision, enabling accurate determination of the hardness of minerals and gemstones through controlled scratch testing Widely Used: It is suitable for gems, jade, ceramic tiles, floors, glass, mobile phone screens, minerals, concrete, etc. Ideal for jewelers, mineralogists, and collectors to verify authenticity Service:We attach great importance to our customers' shopping experience. If you have any questions, please feel free to contact us, we will reply you as soon as possible within 24 hours