Diamond Test Pen, Gold and Silver Diamond Jewelry Tester, Practical Jewelry Diamond selector, moissanite Tester, Portable Test Pen

1. Use metal detection to identify common gem types 2. Automatic calibration value 3. Displays a clear and readable analog panel, easy to read 4. Portable tester that can be used anywhere Specification: Detection objects: Identify metals, simulants, moissanite and diamonds Measuring range: Probe tip (0.48mm), can test objects as small as 1.00mm (0.01ct) gemstone Dimensions: 166x36x31 mm (6.5x1.4x1.2 inches) Product weight: 105G Power supply: 3 AAA batteries (not included) or AC adapter Highlighted autonomy: 5 minutes from the last hour measured Packaging accessories: Drilling instrument host