How To Test Diamond? Turn on the switch,Make sure only 1 light is lighting up on the scale.Wait few seconds for the probe to heat up until Lamp on ready OK.Turn on the lights numbers corresponding to the indoor temperature and diamond weight.If don't know. Set 4 lights is lighting up on the scale.Start test diamond, no need to adjust the switch switch.Use the diamond discriminator probe to make 90-degree contact with the measured object, and observe the indicator light change.It needs a little bit of force to stop it on the diamond surface and make full contact.If unsuccessful, please repeat the second step. The battery temperature is lower than 10 degrees Celsius, which seriously affects the use time Best to measure in no wind conditions The operating temperature is within the range of 10-35 degrees Celsius, and the humidity is below 80% When testing diamond, your right index finger must keep touching the metal panel on the back of the tester. Please turn off the power after the test to save power. If lights >= 9 and have sounds, it is true diamond. If lights <9 and no sounds, it is not diamond. If lights is 7 or 8, it is true crystal. If lights is 6 or 7, it is true jade. If lights is 4 or 5, it is glass. Don't test metal, Don't wear gloves. In a low temperature environment, the battery discharge is weakened. Please raise the battery temperature to above 10 degrees Celsius The test takes a few minutes, please turn off the power after the test is complete The surface of the test object is clean, flat and dry. Please turn off the power after the test to save power. High Accuracy Diamond Tester Professional Diamond Tester Pen Jeweler Tool for Novice and Expert - Diamond Selector II 9V Battery Included(Black Diamond Testers) Package include: 1 x Diamond Tester Pen , 1 x Leather Pouch Case, 1 x DC 9V battery.

[Package include]:Diamond tester is battery powered for convenience.Requires 1 standard 9v battery, which is included.Package include:1 x Diamond Tester,1 x Leather Pouch Case,1 x DC 9V battery. Diamond Tester Pen is simple to operate to get results, professional(s) are not required. Simply turn on our Diamond Tester Pen detector; place the tip of the Diamond Tester on the gem stone (lightly pressed is sufficient) and If the stone is fake, crystal or cubic zirconia, the tester will not beep. Uses large / small switches for testing diamonds.Emits audible sounds to easily differentiate the readings.Diamond tester is use battery powered for convenience.Requires 1 standard 9v battery, which is included. Fast and safe : This diamond selector tester designed for quick, precise, and safe diamond testing. No harm to diamonds. Easy to Use: Real Diamond will Emits sounds and lights >=9.Fake crystal, such as cubic zirconium ( CZ ), crystal, glass will be no sounds and lights <9.

Item Dimensions LxWxH: 3.94 x 0.79 x 1.18 inches. Color: Black. Style: Diamond Tester Pen. Power Source: Battery Powered. Brand: UVER. Best Sellers Rank: See Top 100 in Arts, Crafts & Sewing. : B0BLXN8GXW. Manufacturer: UVER. Date First Available: November 10, 2022. Batteries: 1 9V batteries required. (included). Item model number: HSL. Product Dimensions: 3.94 x 0.79 x 1.18 inches; 8 Ounces.