Characteristic: 1. LCD AND LED DESIGN: Portable jewelry tester with LCD display and LED indicator, allowing you to quickly identify detected objects, has high sensitivity and high accuracy. 2. HIGH EFFICIENCY: Mainly used for quick identification of diamonds and other jewelry, the measurement results are accurate, easy to read, efficient and convenient. 3. SOUND ALARM: If a real diamond is detected, the green LED will light up, and if it is a moissanite or simulated diamond, the red LED will light up and the alarm will sound. 4. COMPACT SIZE: With its compact design, this jewelry detector is easy to carry and store, and it also comes with a stone holder for easy detection. 5. . GEMSTONE DIAMOND TESTER LED METER Specification: Item Type: Moissanite Pen Material: ABS . GEMSTONE DIAMOND TESTER LED METER List of packages: 1 x Moissanite Pen 1 x Storage Bag 1 x Handle 1 x User Manual . GEMSTONE DIAMOND TESTER LED METER . GEMSTONE DIAMOND TESTER LED METER Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.