Features: 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. LCD display & LED indicator. Powered by DC 9V battery x 1 ( Included) 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. Hqdz Diamond Tester Pen Test result analysis 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. Package include: 1 x Diamond Tester 1 x Leather Pouch Case 1 x Testing Platform 1 x User Manual Our products are all from factory direct supply, we can guarantee 100% inspection before shipping. If any problems of our products really exist, an exchange or a refund is available.

?[Service]: If you have any questions about use, please contact us. We will explain in detail. Professional equipment, the use method needs to learn slowly. ?[Portable]:Portable electronic device for distinguishing real diamonds from other simulated stones.If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction. ?[Supporting battery]: Supporting alkaline mercury-free environmentally friendly high-performance battery. ?[Intuitive Design]: Fake crystal, such as cubic zirconium ( CZ ), crystal, glass will be no sounds and lights <9.Professional Diamond Selector II will indicate genuine diamond or fake,LCD display & LED indicator. ?[Easy to Use]: Real Diamond will Emits sounds and lights >=9.It is designed for quick, precise, and safe diamond testing.Emits audible sounds to easily differentiate the readings.

Item Dimensions LxWxH: 4.72 x 1.18 x 0.79 inches. Color: Black. Power Source: Battery Powered. Brand: YANFAN. Date First Available: April 26, 2022. Country of Origin: China. Manufacturer: YF-23. Item Weight: 6.6 pounds. Best Sellers Rank: #63,277 in Arts, Crafts & Sewing. Customer Reviews: 4.5 out of 5 stars 19 ratings 4.5 out of 5 stars. : B09Z2R63D1. Item model number: YF-787. Product Dimensions: 4.72 x 1.18 x 0.79 inches.