Check the listing for details. Diamond Jeweler Tool Kit Portable Gemstone Tester Selector Testing Gold Pen. Color: Black, Condition: New. Listed at 10.99 USD. Product Description Diamond Tester Selector Gemstone Testing Kit Digital Electronic Tool Features: --This is Electronic Diamond Tester a portable electronic device for distinguishing real diamonds from other simulated stones.--It is designed for quick, precise, and safe diamond testing, simple calibration for stones of various sizes.--With LED light and audio result indication.--Accurate and reliable reading, with a metal alert, a testing platform for loose stones.--Come with One mini jeweler’s loupe with 60X magnification.--The loupe built-in LED and fluorescence lights for normal illumination and currency detection, Easy focus adjustment.Can be used for jewelry, gemstone, document, and currency authentication.Specifications:Color: BlackDimensions: 160*42*22mmTesting Capability: Diamonds, Diamond simulation (e.g. CZ), MetalAuto Off: " N/AInitial warm-up: ~ 20 sec.Indicator: Audio and LED lampsPower: 1 x 9V Battery ( not included)Package Included: 1 x Diamond tester(battery not included)1 x Testing platform