💎 Unleash Your Inner Gemologist with Precision Testing! Beeping sounds provide clear differentiation between genuine diamonds and fakes. Experience fast and safe diamond verification with our professional-grade tool. Designed for ideal conditions—temperature and humidity matter for accurate results. Comes with a sleek leather pouch for easy transport and storage. No gemology degree required! Simple operation for novices and experts alike. LCD display & LED indicator Includes 9V battery High accuracy testing The High Accuracy Professional Diamond Tester Pen is an essential tool for both novice and expert jewelers. It features a user-friendly design with an LCD display, LED indicators, and audible alerts to ensure accurate diamond testing. The device operates on a standard 9V battery, included in the package, and comes with a leather pouch for easy portability. Ideal for quick and precise testing, this diamond tester is perfect for anyone looking to verify the authenticity of gemstones.