High Precision Diamond Tester Pen, Multifunctional Thermal Conductivity Meter, Portable Diamond Selector for Novices and Experts

【Portable Design】: Convenient to carry and use anywhere. 【Advanced Diamond Identification】: With its high precision capabilities, the high precision diamond tester pen distinguishes between different types of diamonds, ensuring a accurate selection every time. 【High Precision】: Ensure accurate and reliable measurements for diamond testing. 【Easy to Use】: Simple operation for quick and efficient testing.