Diamond Tester Pen:Real Diamond will Emits sounds and lights 9. crystal, such as zirconium ( ), crystal, glass will be no sounds and lights less than 9.Diamond Tester: If the stone is a real diamond, a green indicator will be displayed. The metal alarm function makes a continuous beep when the accidentally touches the metal instead of the stone.Magnifying Glass Accessory: 2 pieces magnifying glass are provided, one is equipped with 60X and LED illumination and another one has 2 Lenses(30X 60X) and 2 LED lights. Clear magnification effect, refine surface, comfortable and natural to use. They can be applied for , jewelry, coins, , watches, hobbies, models and observing other items you .Multiple uses: Professional Diamond Selector kit is suitable for testing items, such as diamonds, jades, emeralds, crystals, agates, and so on, making it possible to distinguish and observe clearly and .Perfect Combination: the package includes 2 piece of Jewelry tester and 2 piece of Jewelry loupe, which are complete and practical to test or observe diamonds, bringing you a good using experience. The jewelry diamond tester selector is powered by DC 9V battery the battery is not included.Product DescriptionNon-destructive dual function tests.Diamond tester pen is designed for fast, precise and safe diamond testing.Diamond Tester Analysis:If lights have 9 and tones, it is a real diamond.If lights are less than 9 and no noise, it is not diamond.If the lights are 7 or 8, it is true crystal.If the lights are 6 or 7, it is true jade.If the lights are 4 or 5, it is glass.Do not test metal. Do not wear gloves.Moissan Tester:The green indicator is displayed on Diamond Selector II when the stone is a real diamond. Keeps the buzzing function active if the accidentally touches the metal instead of the stone.Magnifying glass with 2 lenses and 2 LED lights:Primary lens 30x22mmSecondary Lens 60x12mmSize: 55 x 40 x 28mm (folded); 98 x 42 x 31mm (unfolded)Power supply: 3 x LR1130 batteries (not included).Diamond Tester:Size: 160 x 40 x 23 mmcolor:BlackMaterial:MetalPackage Contents:1 set x diamond testerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.