Diamond Moissanite Tester Selector LED Indicator Jewelry Gemstone Detector Tools Product Description Diamond Moissanite Tester Selector LED Indicator Jewelry Gemstone Detector Tools This is Electronic Diamond Tester a portable electronic device for distinguishing real diamonds from other simulated stones. It is designed for quick, precise, and safe diamond testing, simple calibration for stones of various sizes. With LED light and audio result indication. Accurate and reliable reading, with metal alert, testing platform for loose stones. How to prepare? Mark on the battery Turn the Power Swich On Confirm the Battery Lamp lights up Wait for about 30 seconds till the Ready Lamp lights up. DIAMONDS: 1. Beeping sound (beep-beep-beep) 2. 1~4 of the Red Lamp box OF the Level Meter ? will light on. (More no. of Red Lamp boxes will light up for bigger sized stones.) DIAMOND SIMULANTS (Except Synthetic Moissanite): 1. No Beeping sound. 2. No Red Lamp boxes will light on. Green and/or up to Yellow Lamp boxes may light on depending on the type of simulants.) METAL ALERT: 1. Continuous buzzing sound. (The thermal conductivity of the metal is very high and can give the same indication as a Diamond with most Thermal Probes. The Diamond Selector ?has a Metal Alert buzzer to warn you when the Probe tip touches metal). If you hear the Metal Alert buzzing sound.re-touch the Probe tip so as to touch only the tested stone. Package included: 1 x Diamond selector II tester 1 x Protected leather bag 1 x Texting Platform 1 x User manual Item specifics Condition: Pre-owned Modified Item: No Type: Gauges Stone Measuring Country/Region of Manufacture: China Brand: Unbranded UPC: Does not apply