TOPINCN Gemstone Tester, Electronic Jewelry Tester with Sound Alert, Portable Thermal Conductivity Pen for Loose Set Gemstones Precious Metals

Spec: Item Type: Jewelry Tester Material: ABS Weight: Approx. 160g / 5.6oz Operating Temperature: 10-40°C Product Size: Approx. 158x45x21mm / 6.22x1.77x0.83in Data Cable: Type C 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. Package List: 1 x Jewelry Tester 1 x Connection Cable 1 x Accessory 1 x Instruction Manual

• [Portable and Convenient] Designed for gemologists on the move, this compact device fits perfectly in your pocket or bag. its lightweight abs construction (only 160g) and rechargeable battery make it for jewelry fairs, antique shops, or field gem testing anywhere, anytime without worrying about power outlets.
• [Easy One-step Operation] Simply place the probe vertically on your gemstone and press the switch for results. no complicated procedures or long waiting times - this detector gives you clear readings immediately through both visual led indicators and audible alerts, making testing effortless for beginners alike.
• [Multi-sensory Alert System] The detector combines bright led lights with distinct audible signals to clearly indicate test results. this dual-alert system ensures you won't miss any readings, even in noisy environments or low-light conditions, providing unmistakable verification of your gemstone's authenticity.
• [Professional Testing Guidelines] For optimal accuracy, follow the included instructions to properly test your gemstones while avoiding unsuitable materials like metal or skin. the pen's precision thermal conductivity measurement requires correct usage to deliver laboratory-grade results you can trust for valuable jewelry assessment.
• [Accurate Gemstone Identification] Engineered for precision, this jewelry tester pen quickly distinguishes between genuine and synthetic gemstones with high accuracy. its advanced thermal conductivity technology ensures reliable results for both loose stones and set jewelry, making it ideal for jewelers and gem enthusiasts who demand dependable performance.