Description: <p>Pocket portable handheld.</p><p>Non-destructive testing,easy and accurate operation.</p><p>Power supply:two AAA batteries(not included)</p><p>There are 2 kinds of sounds,3 kinds of color lights,easy to distinguish the authenticity of diamonds</p><p>The principle is designed according to the thermal conductivity of diamonds and various imitation diamonds.The instrument is used to quickly distinguish natural diamonds and various anti-drilling</p> Specification: <p>Operation method:</p><p>1.Turn on the power,the power indicator will light up,the tester will begin to warm up,and the tester will be ready for use in a few seconds.</p><p>2.Put the loose diamond into the appropriate recessed hole of the support tray.Those who have been mounted can be held by hand.</p><p>3.Brighten several light-emitting diodes according to the weight of the measured real and fake diamonds and the temperature of the measuring place.</p><p>4.Remove the probe sheath,hold the instrument and touch the conductive plate of the back cover of the instrument with your right index finger; make the probe lightly touch the table surface of the measured real and fake diamonds vertically.</p><p>5.Pay attention to the reflection of the instrument carefully.If the remaining yellow LED lights up,when the light turns to DIAMOND,and the buzzer sounds,it means that the testee is a real diamond.On the contrary,if the light does not turn on DIAMOND and the instrument does not emit a sharp beep,it means a fake diamond or a counterfeit product.</p> Size_Chart: Note: Package_Includes: <p>1 Piece Diamond Tester</p>