Portable Diamond Tester Selector Illuminated Jewelry Gemstone Testing Tool Kit 💍【Professional Product 】: Designed for quick, precise, and safe diamond testing. Portable electronic device for distinguishing real diamonds from other simulated stones. Diamond tester is equipped with convenient carrying cases. 👨‍🔧【Easy to Use】: If the diamond is fake, it will not display and make a sound. If it is a real diamond, there will be a Light up indicator. Diamond tester is very easy to use. 🚀【Fastest Effect】: Display & indicator, large / small switch for testing diamonds +/ - 8 points, metal alert ( When a user accidentally hit the metal rather than stone will sound ). 🚴‍♀️【Smooth & Tangled-Free】: This gemstone testing equipment 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 leather bag and small testing tray for holding loose stones. Specifications: Color：Black Material: ABS + MetalType: Diamond TesterDimensions: 6.3" x 1.6" x0.9"Power: 9V (Not Included) How To Test Gem Turn on the switch.Make sure only 1 light is lighting up on the scale.Wait few seconds for the probe to heat up until Lamp on ready OK.Turn on the lights numbers corresponding to the indoor temperature and diamond weight.If don't know. Set 4 lights is lighting up on the scale.Start test diamond, no need to adjust the switch switch.Use the diamond discriminator probe to make 90-degree contact with the measured object, and observe the indicator light change.It needs a little bit of force to stop it on the diamond surface and make full contact.If unsuccessful, please repeat the second step. Professional Designed for quick, precise, and safe diamond testing. Portable electronic device for distinguishing real diamonds from other simulated stones. Diamond tester is equipped with convenient carrying cases. Easy To UseIf the diamond is fake, it will not display and make a sound. If it is a real diamond, there will be a Light up indicator. Diamond tester is very easy to use. Fast EffectDisplay & indicator, large / small switch for testing diamonds +/ - 8 points, metal alert ( When a user accidentally hit the metal rather than stone will sound ). Smooth and EasyThis gemstone testing equipment 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. Package includes: 1 x Portable Diamond Tester Selector Illuminated Jewelry Gemstone Testing Tool KitShipping Information: Your item Ships Same Day to 1 Business Day from our California Location.