Features:1. Lightweight and compact in size, easy and convenient to carry.2. Diamond Selector II can help you to distinguish whether your diamond is real or fake.3. Diamond Selector II is equipped with a PU bag and small testing tray for holding loose stones.4. Green indicator will be showed on Diamond Selector II if the stone is a real diamond. It will make continuous buzzing sound when user accidentally touches metal rather than stone.5. Moissanite Tester is a matching instrument with the Diamond Selector II. It is only used for the distinction of colorless Moissanite.6. Non-destructive testing, simple and accurate operation, low power consumption, low battery alarm (red light indication) for Moissanite Tester.7. After 10 minutes' use of Moissanite Tester, the power indicator light (green light is automatically turned off) and long beep sounds will alert the user to turn off the instrument.Specification:Condition: 100% Brand NewItem Type: Jewelry ToolMaterial: PlasticColor: As Shown in the PictureDiamond Selector II Size: Approx. 16 * 4 * 2.1cm / 6.30 * 1.57 * 0.83inchDiamond Selector II Battery: 9V (Included)Moissanite Tester Size: Approx. 2.2 * 4 * 16cm / 0.87 * 1.57 * 6.30inchMoissanite Tester Battery: 9V (Included)Weight: Approx. 325gPackage List:1 * Diamond Selector II1 * Moissanite Tester2 * Manuals2 * Trays2 * Batteries (9V)Note for Moissanite Tester:1. The probe of this instrument is very sensitive. It should wear the PU bag to be protected when not in use.2. Low power battery should be replaced in real time to ensure accurate detection3. Take out the battery if it will not be used for a long time.4. For correct testing, it is recommended that you take a calibration adjustment after annual maintenance..