Hardness test Thermal Conductivity Meter High sensitivity Gem Detector Stone distinguishing

Label:Yes 1. It is lightweight and compact in size (with a size of credit card), easy and convenient to carry. 2. Real diamond is indicated by red LED and sound. 3. Accurate and reliable test result, easy to read. 4. If diamond is fake, there will be no reaction. 5. With metal alert function, it will continuously emit buzzing sound when accidentally touches metal.

Specification: Item Type: Jewelry Tool Material: Plastic + Metal Color: As Shown in the Picture Size:8.5*5.4cm(3.35*2.13in) Battery: 2 * AAA Batteries (Not Included)

Package List: 1 * Diamond Tester (Batteries Not Included) 1 * English Manual 1 * Bag 1 * Metal Tray

Note: Diamond selector III can measure the different heat conductivity of individual stones and distinguish it through just one-touch simple operation.However, those stones with similar heat conductivity to the natural diamonds can not be distinguished.