Experience cutting-edge technology with a built-in LED light source that requires no warm-up time. The top box can be opened to match gemstones of different sizes-Making it the ideal Portable Gem Tester for on‑the‑go evaluationsEngineered for speed and accuracy, our tester delivers reliable results in seconds. Its compact design ensures that you can swiftly verify authenticity anytime, anywhere, serving as a top‑quality Gemstone TesterDesigned with an intuitive pointer interface, this device maximizes your productivity by allowing fast and efficient testing. Its streamlined performance makes it the ultimate Gemstone Tester for All StonesNo professional skills are needed-just power on the device, gently press the tip against the stone, and get instant feedback. Its user-friendly operation ensures accuracy with every testNot limited to diamonds alone, this tester is perfect for assessing a wide range of gemstones. Whether you're a professional jeweler or a hobbyist, it offers various functionalities to meet your diverse testing needsColour:As ShownMaterial:Metal+PlasticPackage Contents:1 * gem tester for all stonesOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.