This gemstone tester is not only a diamond tester, but also a multi-gemstone tester. Diamond Selector II can help you distinguish whether diamonds are real or fake, including: diamonds, sapphires, crystals, agates, jadeite and other gemstones of different sizes. With the Moissanite tester, it is safe and reliable. The power indicator light (automatically turns off the green light) and a long beep remind the user to turn off the instrument. Convenient storage bag Diamond Selector II is equipped with a PU bag and a small test tray, which can hold loose stones and is compact in size, easy to carry. Fast and accurate test: The green indicator appears on the Diamond Selector II if the stone is a real diamond. When the user accidentally comes into contact with metal instead of stone, it will emit a continuous buzzing sound. Color: As shown Material: Plastic Package contents: 1 * Diamond tester 1 * Moissanite tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.