[Upgraded] Diamond Tester Pen, High Accuracy Jewelry Diamond Teste Portable Electronic Diamond Tester Tool for Jewelry Jade Ruby Stone?with Battery?

Color:Black Diamond Selector II" is a portable electronic device for distinguishing real diamonds from other simulated stones. It is designed for quick, precise, and safe diamond testing. Features: Pocket with a handheld. Operation simple and accurate. Emit audible sounds to give accurate reading. Diamond indicator will be showed if the stone is a REAL diamond (Green light). Metal alert (continuous buzzing sound when user accidentally touches metal rather than stone). Large / small switch for testing diamonds +/ - 8 points. To emit sounds to give accurate reading. LCD display & LED indicator. If stone is Fake crystal, a simulant such as cubic zirconium (CZ), will be no reaction. Dimension: 16 x 4 x 2 cm Powered by DC 9V battery x 1 ( Included) Package include: 1 x Diamond Tester 1 x Leather Pouch Case 1 x Testing Platform 1 x User Manual