YUEHISY Diamond Tester Pen, Portable Type C Rechargeable Tester, High Accuracy Jewelry Gemstone Detector, for Gem Identification

Specification: Item Type: Jewelry Tester Material: ABS Weight: Approx. 160g / 5.6oz Operating Temperature: 10-40°C Product Size: Approx. 158*45*21mm / 6.22x1.77x0.83in Data Cable: Type C Built in Li Battery: 14500, 800mAh How to Use: Gemstone Measurement, Identification 1. Adjust according to the size of the gemstone to be measured. 2. Use the up or down keys on the device to adjust based on the carat weight displayed below the instrument. You do not need to set the carat weight accurately. 3. However, remember: for gemstones (larger than 1.0 carat), turn on 1 green light; for gemstones (0.5 carat), turn on 2 green lights. 4. For small stones (e.g., cut or tapered), activate 3 to 4 green lights (take special care not to touch any buttons during testing). When holding the device, ensure your fingers make contact with the conductive plate on the back (measurements will be inaccurate without this contact). Refer to the manual for additional guidance. packing list: 1 x Jewelry Tester 1 x Connection Cable 1 x Accessory 1 x Instruction Manual

• Fast and Accurate Testing: Engineered for quick and accueate gemstone detection, this tester easily distinguishes genuine gemstones from synthetic stones, ensuring dependable results for both loose and set gemstones as well as other jewelry and precious metal products.
• Easy to Operate: The detector is easy to operate. Simply position the probe vertically on the object and press the switch. No need to wait for a long time. You will receive the results immediately.
• Alerts and Sound: This gemstone detector features alerts and sound. When the light illuminates, the detector emits an audible signal, allowing you to easily make distinctions.
• Portable and Convenient: This compact electronic device is designed for easy portability, fitting well in your wallet or backpack, making it ideal for on the go gem testing anytime, anywhere.
• Friendly Reminder: The thermal conductivity pen operates by measuring an object's thermal conductivity. Please ensure you follow the correct testing procedure and avoid using it on unsuitable items (such as metal, skin, water, etc.) to guarantee accurate results. Improper operation may compromise the accuracy of the test results.