Diamond Test Pen, High Precision Jewelry Diamond Tester with LED Digital Display, 5 Minutes Since Last Measurement/Auto Calibration Value, Suitable for Novices

Automatic calibration value Use metal detection to identify common gem types Displays a clear and readable analog panel, easy to read Specification: Measuring range: Probe tip (0.48mm), can test objects as small as 1.00mm (0.01ct) gemstone Product weight: 105G Power supply: 3 AAA batteries (not included) Highlighted autonomy: 5 minutes from the last hour measured Dimensions: 166x36x31 mm (6.5x1.4x1.2 in)

• Retractable Probe Tip: The retractable probe tip ensures even pressure on the stone during the test, ensuring more reliable results. The probe tip is only 0.6 mm thin and can test colorless diamonds as small as 0.02 carats.
• Easy to Use: The diamond test pen is easy to use and no professional is needed to get the results. Simply turn on our diamond detector; place the tip of the diamond tester on the stone (gently press to do it).
• Quick Warm-up Time: The gem tester's fast and efficient warm-up time only takes about 25 seconds, you can start working immediately and make full use of your precious time.
• Best Efficiency: Our diamond test pen is designed for your efficiency and features an intuitive LCD digital display so you can work quickly and efficiently.
• Diamond Tester: Diamond combination tester with stable and accurate performance. Designed to differentiate between colorless diamonds and moissanite. Detect and differentiate between diamonds and imitations in 2 seconds.