General description Portable electronic device for distinguishing real diamonds from simulated stones. It is designed for a fast, accurate, and safe diamond test. Technical specifications Color: Black + Silver Material: PC + Metal Size: 16 x 4 x 2.2 cm Powered by: DC 9V battery x 1 (not included) Measurement allowed error: +/- 1-3 cm Package Contents 1 x Metals and Gem Tester 1 x LED Magnifier 1 x Test Bench 1 x Instruction Manual Other information Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing.