Hyuduo Gemstone Tester, Portable Thermal Conductivity Jewelry Detector

Spec: Item Type: Gemstone Tester Material: ABS Weight: Approx. 140.00g / 4.94oz Working Temperature: 10-40℃ Product Size: Approx. 158x46x22mm / 6.22x1.81x0.87in Data Cable Plug: Type C Built in Lithium Ion Battery: Model , Capacity 500MAH Package List: 1 x Gemstone Tester 1 x Connecting Cable 1 x Accessory 1 x Instruction Manual How To Use: 1. Preheat the device for 30 seconds after turning it on. 2. The device will automatically shut down if not in use for 10 minutes while turned on. 3. When holding the device, be sure to touch the conductive plate on the back with your fingers (correct measurement cannot be taken without touching the plate). 4. Refer to the instruction manual for further details.

• [PRECISE THERMAL CONDUCTIVITY TESTING] This high accuracy gemstone tester pen utilizes advanced thermal conductivity technology to reliably distinguish between genuine gemstones and imitation stones. Unlike simple visual checks, it measures heat transfer rates to provide trustworthy results, making it an essential tool for jewelers, collectors, and hobbyists who need to verify stone authenticity quickly and accurately.
• [VERSATILE TESTING CAPABILITY] Designed for flexibility, this portable gem checker works effectively on both loose and mounted gemstones, as well as various jewelry items and precious metal products. Whether you are testing a ring, a loose sapphire, or a vintage brooch, this device adapts to your needs, offering a convenient solution for anyone requiring rapid and precise gem identification in different settings.
• [AUDIBLE AND VISUAL ALERTS] The gemstone detector features a clear prompt system with both light and sound indicators. When the red light turns on, an audible beep confirms the reading, allowing you to distinguish gemstones from ordinary stones effortlessly. This dual feedback mechanism ensures you never miss a result, even in noisy environments, enhancing your testing accuracy and confidence.
• [CORRECT USAGE FOR ACCURACY] This gemstone tester works by measuring thermal conductivity, so proper testing procedure is crucial. Avoid using the device on metals, skin, water, or other unsuitable surfaces, as these can skew results. By following the recommended guidelines and placing the probe vertically on the test object, you ensure consistent, reliable readings every time, preventing common user errors that affect accuracy.
• [ULTRA PORTABLE AND EASY TO OPERATE] Compact enough to fit in any wallet or backpack, this small gemstone detector is designed for on the go use. Simple operation means anyone can use it: just place the probe vertically on the item, press the switch, and get results. Its rechargeable battery and Type C USB charging make it convenient for travel, work, or home use, ensuring you always have a reliable testing tool at hand.