This EASY to use genuine GTE Diamond Analyzer will test the purity of Diamonds, Rubies, Stones, Moissanites, CZ (Cubic Zirconia), Sapphire, Rhinestones, lab-created diamonds, zircon, and other simulants! Included with the Diamond Tester: - LCD display & LED indicator.- Designed for quick, precise, and safe diamond testing.- GTE Portable electronic diamond tester - Powered by DC 9V battery x 1 (Included)- Leather carrying case. TESTING GEMSTONES & DIAMONDS You might have heard that there are a lot of ways to tell whether a diamond is real or fake. The problem is that most of these methods are not 100% reliable. Using a diamond tester, however, is one of the surest and fastest ways to check if you have an original diamond. A diamond tester is a portable device that you can put in your pocket. The tester has a small, needle-like tip that needs to be placed on the stone tested. If the diamond is real, the device indicates that on its display or with a sound signal. Diamond testers’ principle of operation is based on the fact that different gemstones conduct heat differently. Heat passes through a diamond in a different way than it would through cubic zirconia or glass. A diamond tester will detect the rate at which heat moves through the stone and will tell you whether it is a real diamond. There are also testers that use electrical conductivity to test stones – they are based on a similar principle, but they use electricity instead of heat. This electronic diamond tester is convenient for traveling with or carrying in a purse or briefcase. ----------- PuriTEST Diamond Weight Estimator and Gauge The diamond weight estimator is perfect for estimating the size of loose or mounted stones when other methods are unavailableThis estimator works for emerald, marquis, pear shaped, round and baguette stones as well as brilliant full cutsSimply lay the gem estimator on your stone pad and place the diamond in question on the appropriate outline, and you will be able to instantly tell the approximate weight of your stone*--------------- 30X TRIPLET EYE LOUPE MAGNIFYING GLASS The GTE 30x Triplet Eye loupe Magnifier is a useful tool for the watchmaking industry, especially for inspecting those tiny objects. Closely analyzes jewelry, coins, stamps, and antiques, etc. The jewelry magnifier features a chrome-plated metal body with a 30x Triplet glass lens. Protected when not in use by the swing-out chrome-plated metal cover. The loupe folds up easily when not in use and fits in your pocket. Dimensions of eye loupe: 2.4in*1in*0.7in (unfolded), 1.6in*1in*0.7in (folded). Extremely powerful jeweler's loupe of 30 times magnification, an optical glass that is 21 mm in length. ----------------If you have any further questions, please feel free to contact us. We look forward to serving you in the future.