ATAR Portable Diamond Tester Gemstone Selector II Gems Jewelry Testing Tools ATDT1

Real Diamonds are indicated by sound and light signals. This easy-to-use, handheld gadget measures the thermal conductivity of the tested sample/stone and has an LCD display, LED lights and emits audible sounds to give accurate readings time after time. 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 ). If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction