💎【Easy to use】 Place the tip of the diamond tester gently on the gemstone. If the diamond is fake, crystalline or cubic zirconia, the tester will not beep. An excellent diamond tester tool kit, suitable for handling any exposed or mounted diamonds and gems. Popular among professionals, hobbyists, coin enthusiasts, and business owners alike. Excellent tools. Excellent Value. Great gift idea.

💎【Intuitive design】 Our gemstone tester has an intuitive design, light and portable, and the jewelry diamond tester is equipped with LED lights and audio instructions. As long as the tip is perpendicular to the test masonry and the switch is pressed, the result can be obtained.

💎【Quick Identification】You just turn on our diamond test pen detector; place the tip of the diamond tester on the gemstone, and a single tap is enough. In providing fast and accurate results. You will be able to know in a few seconds whether an item is fake or not.

💎【Adjust Size】We have to choose the diamond size before using the diamond tester.Otherwise we may get the incorrect result.

💎【Touch Panel】We have to touch the panel on the back when testing. Othersize we will get a wrong result.

💎【Incorrect Contact】When we have incorrect contact, this diamond tester pen will have a flashing OR it will turn off. When you testing metal,skin,or something else.

💎【Warm Notice】The Diamond Tester Pen works by measuring the thermal conductivity of an object.Make sure to test according to the correct testing procedure, avoid using the diamond tester on unsuitable items(metal,skin,water and ect.), to ensure accurate testing results. Any improper operation may affect the accuracy of the test.

💎【Professional Diamond Selector】 After powering on, turn the wheel to keep 4 green lights on to finish the Initialization. Otherwise you will get inaccurate results.For Diamond Simulants：No Sound and No Red lamps light on.[Package include]:1 x Diamond Tester Pen, 1X 60XJewelers Loupe,1 x Testing Platform,1 x User Manual,1 x Tweezers.

💎【Accessory tools】 Magnifying glass (small microscope) equipped with 60X LED illumination. Diamond test pen can be used for gems, coins, antiques, stamps, reading, inspection, etc. Diamond tester pen is designed for fast, precise and safe diamond testing.

💎【Professional Service】 If you have any questions about our diamond tester pen, please contact us. We have a professional dedicated to assisting you and help you answer any questions you may have.