Thank you for choosing our diamond detector, it will play a role in detecting the quality of gemstones for you, allowing you to use it with more confidence! Accuracy and portability are what we pursue all the time, we've been working on it to becoming your precision stewards. How To Test Diamond 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. 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. Working power supply: DC 9 V battery ( included) The pocket size is convenience to carry, you can use it in everywhere With a Faux Leather Pouch, Can Protect it From Scratch, Attrition, Etc. Package include: 1 x Diamond tester Popular among professionals, hobbyists, coin enthusiasts, and business owners alike. Excellent tools. Excellent Value. Great gift idea.[Package include]:Diamond tester is battery powered for convenience.Requires 1 standard 9v battery, which is included.Package include:1 x Diamond Tester,1 x Leather Pouch Case,1 x Testing Platform,1 x User Manual,1 x DC 9V battery. Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector; place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep. Application Range:Industrial Purpose, Circuit Board And Printing , Industry, Medicine, Gardening, Coin, Diamond,Stamp, Jewelry, Appraisal, Education, Geography, Home And Office.fast and safe This diamond selector tester designed for quick, precise, and safe diamond testing. No harm to diamonds. If you have any questions about use, please contact us. We will explain in detail. Professional equipment, the use method needs to learn slowly. Each diamond tester pen has a matching alkaline mercury-free environmentally friendly high-performance battery,so you don't need to spend extra effort to choose a matching battery.Please read the instructions carefully before using the professional diamond tester , and use this product correctly in order to test out accurate results. " This diamond tester is specially designed for true and false gemstone testing, not only fast and accurate, but also safe, used to distinguish real diamonds from other imitation stones, without adverse effects on gemstones, suitable for: masonry, crystal, agate, red Sapphire, Emerald and more, it is a great tool to test your jewelry it is small and portable, it is light in weight, it can be put into any handbag or backpack, and it will not put too much burden on you when using it".Date First Available: October 12, 2022. Manufacturer: UVER. Item Weight: 8 ounces. Best Sellers Rank: #103,880 in Arts, Crafts & Sewing. Customer Reviews: 4.0 out of 5 stars 2 ratings 4.0 out of 5 stars. : B0BHY72NPM. Item model number: HAGSDC. Product Dimensions: 5.91 x 1.57 x 0.79 inches.