Gator CablePortable Diamond Gemstone Tester Meter Selector Illuminated Jewelry Testing Tool PenBattery Powered & Portable Tough Rugged Durable & Heavy DutyColor: Black Specifications:Dimensions：6.5" x 1.5" x 0.90" (L x W x D)Weight：5ozTesting Capability: Diamonds / Manufactured Diamonds / Zirconia Gemstone / Gem / Precious StonesColor: BlackAuto Off: On / OffInitial warm-up: about 20 secondsIndicator: Audio and LED lampsPower: 1 x 9V battery (not included) Features:This Electronic Diamond Tester Device will 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 indicationAccurate and reliable reading, with a metal alert testing platform for loose stonesDiamond tester is equipped with convenient carrying cases.Easy to Use: If the diamond is fake, it will not display and make any sound. If it is a real diamond, there will be a light-up indication.Fastest Effect: Display & indicator, large / small switch for testing diamonds +/ - 8 points, metal alert (When a user accidentally hits the metal rather than stone will sound).Precise Stone Testing: This gemstone testing device is not only a diamond tester, but also a multi gemstone tester. It can detect if a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite, and other precious stone of various sizes.Instrument Configuration: This diamond tester pen comes with a vinyl carrying case and small testing tray for holding loose stones. How To Test GemstoneTurn switch on.Make sure only 1 light is lit up on the device.Wait a few seconds for the pen to heat up until the OK light ON is ready.Turn on the lights numbers corresponding to the indoor temperature and diamond weight.If you don't know. Set 4 lights to lighting up on the scale.Start testing diamond, no need to adjust the switch.Use the diamond testing probe to make a 90-degree contact with the measured stone, and observe the indicator light change.It may need a little bit of force to secure it on the diamond surface and make a full contact.If unsuccessful, please repeat the second step. Included In Package:1 x portable diamond tester (V2)1 x vinyl carrying case1 x testing platform1 x User's manuals We Offer The Lowest Prices On eBay for OPTIMUM Quality Cables + Free Shipping On All USA Orders! BUY 4 OR MORE GATOR CABLES GET FREE U.S. PRIORITY MAIL SHIPPING ALL ORDERS ARE SHIPPED OUT WITHIN 1 TO 8 HOURS! Ultra Fast - FREE Shipping Worldwide Shipping From USA to All USA International Shipping No Waiting 3 to 4 Weeks Portable Diamond Gemstone Tester Selector Illuminated Jewelry Testing Tool Strong-Rugged-Durable Heavy Duty Premium Quality Portable Diamond Gemstone Tester Selector Ultimate Performance Great Value CLICK ON OUR eBay STORE