<p>Features:</p> <p>Easy to use even for a new beginner</p> <p>Emit audible sounds to give accurate reading</p> <p>Diamond indicator will be showed if the stone is a REAL diamond (Green light)</p> <p>Metal alert (continuous buzzing sound when user accidentally touches metal rather</p> <p>than stone )</p> <p>Large \/ small switch for testing diamonds +\/ - 8 points</p> <p>To emit sounds to give accurate reading</p> <p>LCD display \u0026amp; LED indicator</p> <p>If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction</p> <p>Operating methods:</p> <p>open the power, the power indicator light, instrument began preheating, after a</p> <p>few seconds instrument can be used.*Take the naked drill will be testedinto</p> <p>support tray appropriate sunken hole, and its mesa upwards. Those already inlay,</p> <p>need not put tray hole in ,you can using handheld its.*according to the weight</p> <p>of the tested diamonds and measuring the temperature place move bright several</p> <p>leds.*take down needle sheath, handheld instruments, the forefinger of conductive</p> <p>plate; touch instrument back cover That probe vertically and measured true</p> <p>diamond mesa gently contact.*carefully watching instrument, if the rest of the</p> <p>emitting diode light reflect yellow, when light to nine diode, accompany beeping</p> <p>this eXplains those tested for a real diamond. By contrast, if lit, and</p> <p>insufficient nine instrument does not send feng chirp, eXplain fake diamond or ape.</p> <p>Specification:</p> <p>Dimension: 16*4.2*2.2cm</p> <p>Powered by DC 9V battery (not included)includes:1 X Diamond selector II tester</p>