Portable electronic device for distinguishing real diamonds from other simulated stones. LCD display and LED display, ed by DC 9V battery x 1 (not included) If stone fake crystal, a simulant like cubic zirconia (CZ), there is no reaction. It is designed for a fast, accurate and safe diamond test colour:Black + silver Material:PC+ metal size:16*4*2.2cm
Package Contents: 1 * Metals and Gem Tester 1 * Test bench 1 * Instruction manual
