JZK Portable Electronic Diamond Tester Pen for Diamond, Sapphire, Ruby, Crystal, Agate, Jade, gems Multi Gemstone Precious Stones Hardness Test Tool, Diamond Selector II V2

• This gemstone testing equipment is not only a diamond tester, but also a gemstone tester. It can detect whether a gemstone is real or fake, including: diamond, sapphire, ruby, crystal, agate, jadeite and other gemstones of various sizes.
• *If the number of lights equals or exceeds 9, and it beeps, it means the diamond is real. *If the lights are about 9 and beeps, it means the sapphire is real. *If the number is 6.5-7, it means the agate is real. *If the number is 7-8, it means the crystal is real. *If the number is 6-7, it means the jade is real.
• Before testing: 1. Insert the battery. 2. Remove the probe cover. 3. Turn on 4. Make sure only one light on the scale turns on. 5. Make sure the "lamp ready" light is on. 6. (If you test the diamond, turn on the number of lights corresponding to the interior temperature and weight of the diamond.) 7. (If you test other gems, it is better to calibrate the probe, method: place the probe vertically on the glass, then adjust the light to 5, then test the gems)
• ★ Notice: *No matter what gemstone you are testing, the probe needle and the tested object should be at a 90° angle. *When testing diamond, your right index finger should keep touching the metal panel on the back of the tester, while you do not touch the panel if testing other gemstones. *Do not test any metal. * Do not use a glove.
• Product size: 16*4*2.2cm. Weight: 100g. Power required: 1 x 9V battery (not included). If you have any problems with the tests, please contact us, we would love to help you.

If the number of lights is equal to or greater than 9, and it beeps, it means the diamond is real. If the number of lights is 9 and it beeps, it means the sapphire is true. If the number of lights is 6.5 to 7, it means the agate is real. If the number of lights 7-8, it means the crystal is real. If the number of lights is 6 to 7, it means that the jade is true. ★ Before the test: 1. Put the battery into the tester. 2. Remove the probe cover. 3. Turn on the switch. 4. Make sure only 1 light lights up on the scale. 5. Make sure the "lamp ready" light is on. 6. (If you test the diamond, then you need to turn on the number of lights corresponding to the inside temperature and weight of the diamond) 7. (If you test other gems, it is best to calibrate the probe before testing, method: placing the probe vertically on a piece of glass, then adjusting the light to 5, and then placing the probe on the gemstone to test) 8. The test is ready. ★ Notice: *No matter what gemstone you are testing, the probe needle and the tested object should be at a 90° angle. *When testing the diamond, your right index finger should keep touching the metal panel on the back of the tester, while you do not touch the panel if you test other gemstones. *Do not test any metal. * Do not use gloves. Product size: 16 x 4 x 2.2 cm. Weight: 100 g. Power required: 1 x 9V battery (not included). The package contains: 1 diamond tester + 1 English introduction + 1 black storage box. If you have any problems with the tests, please contact us, we would love to help you.