Jewelry Tester Tool, Diamond Pen Gemstone Selector Precision Tool Detector with LED Indicator for Distinguish Between True and False 6.3 * 1.57 0.83inch

【LED Light and Audio Indicator】: Equipped with an LED light indicator and an audio alert system, the jewelry Diamond testers provides immediate results. For a positive result, the green indicator light will illuminate, while an audible buzzing sound will be heard when the probe touches metal instead of a stone. 【Simple Calibration Process】: The diamond tester allows for easy calibration to accommodate stones of various sizes. This flexible and user-friendly feature ensures accurate results irrespective of the size of the diamond being tested. 【Portable and Convenient】: Featuring a highly compact design, the diamond testing kit is easy to carry around and comes with a PU case for additional The small testing platform is ideal for holding loose stones during testing, offering both convenience and precision. 【Efficient Diamond Verification】: This diamond tester is designed to give you the assurance you need when dealing with diamonds. The compact unit is capable of distinguishing between a real diamond and a fake one accurately, making it indispensable to jewelers, diamond dealers, and hobbyists alike. 【Beginner-Friendly Design】: Designed with simplicity in mind, this diamond detector is easy to use even for a new beginner. The intuitive design and straightforward instructions allow anyone to reliably verify the authenticity of diamonds without requiring any prior experience or technical knowledge.